FA-69201 / Tide and marine navigation tables / Open access

Standard port tidal curve: Curve factor is measured down from high water · case 01

Low water heights are reported at high water and vice versa.

Verified by executionVariant 1 · 7 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The factor is applied as hw-frange instead of lw+frange.

VERIFIED REPAIR

Height = lw + f*(hw-lw).

Unsuccessful approach: Scaling the high water height instead of the range ignores the low water datum.

Case contract

Input [hrel, hw, lw, sr, nr, hours, fs, fn]: hours ascending, fs/fn spring and neap curve factors. Outside [hours[0],hours[-1]] return None. Factors are linearly interpolated in time on each curve, then blended with k=clamp((hw-lw-nr)/(sr-nr),0,1) as fn+(fs-fn)*k. Height = lw + f*(hw-lw), rounded to 3 decimals.

Why this case matters

Tide tables and passage plans turn published predictions into go/no-go decisions about depth, clearance and timing.

1 / The failure

Exit 1

"""Failure Map reference implementation. Python standard library only."""
import json
import math
N = 1
observations = []
def solve(x):
    hrel,hw,lw,sr,nr,hs,fs,fn=x
    if hrel<hs[0] or hrel>hs[-1]: return None
    j=1
    while j<len(hs)-1 and hs[j]<hrel: j+=1
    w=(hrel-hs[j-1])/(hs[j]-hs[j-1])
    a=fs[j-1]+(fs[j]-fs[j-1])*w
    b=fn[j-1]+(fn[j]-fn[j-1])*w
    k=min(1.0,max(0.0,((hw-lw)-nr)/(sr-nr)))
    f=b+(a-b)*k
    return round(hw-f*(hw-lw),3)
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('standard port tidal curve [-6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.8), ('standard port tidal curve [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.968), ('standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.69), ('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.454), ('standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.194)], [('standard port tidal curve [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.968), ('standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.69), ('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.454), ('standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.194), ('standard port tidal curve [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.829)], [('standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.69), ('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.194), ('standard port tidal curve [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.829), ('standard port tidal curve [6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.8), ('standard port tidal curve [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], None), ('standard port tidal curve [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.194)], [('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], None), ('standard port tidal curve [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.194), ('standard port tidal curve [2.2, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [2.2, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.398), ('standard port tidal curve [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.0), ('standard port tidal curve [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.15)], [('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.454), ('standard port tidal curve [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.0), ('standard port tidal curve [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.15), ('standard port tidal curve [-0.2, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.2, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.864), ('standard port tidal curve [2.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [2.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.542), ('standard port tidal curve [6.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.03)]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)

Boundary fixture	Actual	Expected	Outcome
standard port tidal curve [-6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`5.0`	`0.8`	Failed
standard port tidal curve [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`4.832`	`0.968`	Failed
standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`3.11`	`2.69`	Failed
standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`0.918`	`4.882`	Failed
standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`0.8`	`5.0`	Failed
standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`1.346`	`4.454`	Failed
standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`3.606`	`2.194`	Failed

SHA-256 / 4e91fbe2ececd41adf67694733c49dd54cf7475847b8e27734b3d891befc1506

2 / The unsuccessful fix

Exit 1

"""Failure Map reference implementation. Python standard library only."""
import json
import math
N = 1
observations = []
def solve(x):
    hrel,hw,lw,sr,nr,hs,fs,fn=x
    if hrel<hs[0] or hrel>hs[-1]: return None
    j=1
    while j<len(hs)-1 and hs[j]<hrel: j+=1
    w=(hrel-hs[j-1])/(hs[j]-hs[j-1])
    a=fs[j-1]+(fs[j]-fs[j-1])*w
    b=fn[j-1]+(fn[j]-fn[j-1])*w
    k=min(1.0,max(0.0,((hw-lw)-nr)/(sr-nr)))
    f=b+(a-b)*k
    return round(lw+f*hw,3)
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('standard port tidal curve [-6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.8), ('standard port tidal curve [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.968), ('standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.69), ('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.454), ('standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.194)], [('standard port tidal curve [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.968), ('standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.69), ('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.454), ('standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.194), ('standard port tidal curve [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.829)], [('standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.69), ('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.194), ('standard port tidal curve [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.829), ('standard port tidal curve [6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.8), ('standard port tidal curve [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], None), ('standard port tidal curve [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.194)], [('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], None), ('standard port tidal curve [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.194), ('standard port tidal curve [2.2, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [2.2, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.398), ('standard port tidal curve [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.0), ('standard port tidal curve [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.15)], [('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.454), ('standard port tidal curve [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.0), ('standard port tidal curve [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.15), ('standard port tidal curve [-0.2, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.2, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.864), ('standard port tidal curve [2.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [2.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.542), ('standard port tidal curve [6.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.03)]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)

Boundary fixture	Actual	Expected	Outcome
standard port tidal curve [-6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`0.8`	`0.8`	Passed
standard port tidal curve [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`1.0`	`0.968`	Failed
standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`3.05`	`2.69`	Failed
standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`5.66`	`4.882`	Failed
standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`5.8`	`5.0`	Failed
standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`5.15`	`4.454`	Failed
standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`2.46`	`2.194`	Failed

SHA-256 / 79bd55fb145c6eefeb999922cb6eac05f76996e7e6de6a21f16962225ea5a422

3 / The verified repair

Exit 0

"""Failure Map reference implementation. Python standard library only."""
import json
import math
N = 1
observations = []
def solve(x):
    hrel,hw,lw,sr,nr,hs,fs,fn=x
    if hrel<hs[0] or hrel>hs[-1]: return None
    j=1
    while j<len(hs)-1 and hs[j]<hrel: j+=1
    w=(hrel-hs[j-1])/(hs[j]-hs[j-1])
    a=fs[j-1]+(fs[j]-fs[j-1])*w
    b=fn[j-1]+(fn[j]-fn[j-1])*w
    k=min(1.0,max(0.0,((hw-lw)-nr)/(sr-nr)))
    f=b+(a-b)*k
    return round(lw+f*(hw-lw),3)
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('standard port tidal curve [-6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.8), ('standard port tidal curve [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.968), ('standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.69), ('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.454), ('standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.194)], [('standard port tidal curve [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.968), ('standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.69), ('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.454), ('standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.194), ('standard port tidal curve [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.829)], [('standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.69), ('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 2.194), ('standard port tidal curve [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [5.9, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.829), ('standard port tidal curve [6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 0.8), ('standard port tidal curve [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], None), ('standard port tidal curve [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.194)], [('standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.882), ('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6.3, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], None), ('standard port tidal curve [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-2.5, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.194), ('standard port tidal curve [2.2, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [2.2, 4.1, 1.5, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.398), ('standard port tidal curve [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.0), ('standard port tidal curve [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.15)], [('standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 5.0), ('standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 4.454), ('standard port tidal curve [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.0), ('standard port tidal curve [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-5.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.15), ('standard port tidal curve [-0.2, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [-0.2, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.864), ('standard port tidal curve [2.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [2.0, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 3.542), ('standard port tidal curve [6.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]', [6.5, 4.0, 1.0, 4.2, 1.8, [-5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]], 1.03)]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)

Boundary fixture	Actual	Expected	Outcome
standard port tidal curve [-6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`0.8`	`0.8`	Passed
standard port tidal curve [-5.5, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`0.968`	`0.968`	Passed
standard port tidal curve [-3.2, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`2.69`	`2.69`	Passed
standard port tidal curve [-0.4, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`4.882`	`4.882`	Passed
standard port tidal curve [0, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`5.0`	`5.0`	Passed
standard port tidal curve [1.25, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`4.454`	`4.454`	Passed
standard port tidal curve [3.6, 5.0, 0.8, 4.2, 1.8, [-6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6], [0.0, 0.08, 0.25, 0.5, 0.75, 0.93, 1.0, 0.92, 0.72, 0.47, 0.24, 0.07, 0.0], [0.0, 0.12, 0.32, 0.55, 0.78, 0.94, 1.0, 0.95, 0.8, 0.6, 0.38, 0.15, 0.02]]	`2.194`	`2.194`	Passed

SHA-256 / 77345b77774545526199aa36722cb07fc547f007b25447ab0a10f2d0ad7002cf

Verification & scope

A deterministic toy model with stipulated rules and constants; not certified hydrographic software or a substitute for official tide tables. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:48:09.320159+00:00.

Case digest / 7c6a5634186c6d046a5308c3d8faccfbaf54c563498f7870a9654908ec1dd3c5