FA-70957 / Weather index computation / Member archive

Livestock temperature-humidity index: Fahrenheit depression term · case 02

THI drifts upward and moderate stress is reported too early.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

Input barn temperature degC and RH percent. THI = (1.8T+32) - (0.55 - 0.0055RH)(1.8T - 26); THI is rounded to 0.1 first and the stress level is taken from the rounded value: <72 none, <79 mild, <89 moderate, <99 severe, else emergency.

Why this case matters

Dairy heat-stress alerts and cooling automation key off THI bands.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
15 C barn at 70% RH	`[60.8, "none"]`	`[58.8, "none"]`	Failed

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