{"abstract":"A reported THI of 72.0 is labelled none because the unrounded 71.97 was classified.","category":"Weather index computation","checks":8,"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.","evaluation_group":"w2-weather_index_computation-livestock-thi","failed_approach":"Truncating to 0.1 before classification reports values such as 71.9 for 71.97.","family":"w2-weather_index_computation-livestock-thi-classify-after-rounding","id":"FA-70966","implementations":{"attempt":{"sha256":"bb446d3f9fbed697302a4f85e3bb599e03348f135691f5c7fedf444f5613b0e4","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nN = 1\nobservations = []\ndef solve(t_c, rh):\n    thi = (1.8 * t_c + 32) - (0.55 - 0.0055 * rh) * (1.8 * t_c - 26)\n    thi = math.floor(thi * 10) / 10\n    if thi < 72:\n        level = \"none\"\n    elif thi < 79:\n        level = \"mild\"\n    elif thi < 89:\n        level = \"moderate\"\n    elif thi < 99:\n        level = \"severe\"\n    else:\n        level = \"emergency\"\n    return [thi, level]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['15 C barn at 20% RH', [15, 20], [58.6, 'none']], ['15 C barn at 40% RH', [15, 40], [58.7, 'none']], ['15 C barn at 55% RH', [15, 55], [58.8, 'none']], ['15 C barn at 70% RH', [15, 70], [58.8, 'none']], ['15 C barn at 85% RH', [15, 85], [58.9, 'none']], ['15 C barn at 100% RH', [15, 100], [59.0, 'none']], ['21 C barn at 20% RH', [21, 20], [64.6, 'none']], ['THI just under 72 unrounded 22.2 C 100%', [22.2, 100], [72.0, 'mild']]], [['21 C barn at 40% RH', [21, 40], [65.9, 'none']], ['21 C barn at 55% RH', [21, 55], [66.9, 'none']], ['21 C barn at 70% RH', [21, 70], [67.9, 'none']], ['21 C barn at 85% RH', [21, 85], [68.8, 'none']], ['21 C barn at 100% RH', [21, 100], [69.8, 'none']], ['22 C barn at 20% RH', [22, 20], [65.6, 'none']], ['22 C barn at 85% RH', [22, 85], [70.5, 'none']], ['THI just under 72 unrounded 22.7 C 89%', [22.7, 89], [72.0, 'mild']]], [['22 C barn at 55% RH', [22, 55], [68.2, 'none']], ['22 C barn at 70% RH', [22, 70], [69.4, 'none']], ['22 C barn at 85% RH', [22, 85], [70.5, 'none']], ['22 C barn at 100% RH', [22, 100], [71.6, 'none']], ['24 C barn at 20% RH', [24, 20], [67.6, 'none']], ['24 C barn at 40% RH', [24, 40], [69.5, 'none']], ['26 C barn at 55% RH', [26, 55], [73.7, 'mild']], ['THI on 79 boundary 26.3 C 97%', [26.3, 97], [79.0, 'moderate']]], [['24 C barn at 70% RH', [24, 70], [72.4, 'mild']], ['24 C barn at 85% RH', [24, 85], [73.8, 'mild']], ['24 C barn at 100% RH', [24, 100], [75.2, 'mild']], ['25 C barn at 20% RH', [25, 20], [68.6, 'none']], ['25 C barn at 40% RH', [25, 40], [70.7, 'none']], ['25 C barn at 55% RH', [25, 55], [72.3, 'mild']], ['29 C barn at 20% RH', [29, 20], [72.7, 'mild']], ['THI just under 72 unrounded 22.3 C 98%', [22.3, 98], [72.0, 'mild']]], [['25 C barn at 85% RH', [25, 85], [75.4, 'mild']], ['25 C barn at 100% RH', [25, 100], [77.0, 'mild']], ['26 C barn at 20% RH', [26, 20], [69.6, 'none']], ['26 C barn at 40% RH', [26, 40], [71.9, 'none']], ['26 C barn at 55% RH', [26, 55], [73.7, 'mild']], ['26 C barn at 70% RH', [26, 70], [75.4, 'mild']], ['30 C barn at 55% RH', [30, 55], [79.1, 'moderate']], ['THI just under 72 unrounded 22.8 C 87%', [22.8, 87], [72.0, 'mild']]]]\nfor label, args, expected in fixtures[N - 1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"a1a3c993b8a193504e5efdcc7b043b50b095c4f5aee6253122f2c921246543f2","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nN = 1\nobservations = []\ndef solve(t_c, rh):\n    thi = (1.8 * t_c + 32) - (0.55 - 0.0055 * rh) * (1.8 * t_c - 26)\n    if thi < 72:\n        level = \"none\"\n    elif thi < 79:\n        level = \"mild\"\n    elif thi < 89:\n        level = \"moderate\"\n    elif thi < 99:\n        level = \"severe\"\n    else:\n        level = \"emergency\"\n    return [round(thi, 1), level]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['15 C barn at 20% RH', [15, 20], [58.6, 'none']], ['15 C barn at 40% RH', [15, 40], [58.7, 'none']], ['15 C barn at 55% RH', [15, 55], [58.8, 'none']], ['15 C barn at 70% RH', [15, 70], [58.8, 'none']], ['15 C barn at 85% RH', [15, 85], [58.9, 'none']], ['15 C barn at 100% RH', [15, 100], [59.0, 'none']], ['21 C barn at 20% RH', [21, 20], [64.6, 'none']], ['THI just under 72 unrounded 22.2 C 100%', [22.2, 100], [72.0, 'mild']]], [['21 C barn at 40% RH', [21, 40], [65.9, 'none']], ['21 C barn at 55% RH', [21, 55], [66.9, 'none']], ['21 C barn at 70% RH', [21, 70], [67.9, 'none']], ['21 C barn at 85% RH', [21, 85], [68.8, 'none']], ['21 C barn at 100% RH', [21, 100], [69.8, 'none']], ['22 C barn at 20% RH', [22, 20], [65.6, 'none']], ['22 C barn at 85% RH', [22, 85], [70.5, 'none']], ['THI just under 72 unrounded 22.7 C 89%', [22.7, 89], [72.0, 'mild']]], [['22 C barn at 55% RH', [22, 55], [68.2, 'none']], ['22 C barn at 70% RH', [22, 70], [69.4, 'none']], ['22 C barn at 85% RH', [22, 85], [70.5, 'none']], ['22 C barn at 100% RH', [22, 100], [71.6, 'none']], ['24 C barn at 20% RH', [24, 20], [67.6, 'none']], ['24 C barn at 40% RH', [24, 40], [69.5, 'none']], ['26 C barn at 55% RH', [26, 55], [73.7, 'mild']], ['THI on 79 boundary 26.3 C 97%', [26.3, 97], [79.0, 'moderate']]], [['24 C barn at 70% RH', [24, 70], [72.4, 'mild']], ['24 C barn at 85% RH', [24, 85], [73.8, 'mild']], ['24 C barn at 100% RH', [24, 100], [75.2, 'mild']], ['25 C barn at 20% RH', [25, 20], [68.6, 'none']], ['25 C barn at 40% RH', [25, 40], [70.7, 'none']], ['25 C barn at 55% RH', [25, 55], [72.3, 'mild']], ['29 C barn at 20% RH', [29, 20], [72.7, 'mild']], ['THI just under 72 unrounded 22.3 C 98%', [22.3, 98], [72.0, 'mild']]], [['25 C barn at 85% RH', [25, 85], [75.4, 'mild']], ['25 C barn at 100% RH', [25, 100], [77.0, 'mild']], ['26 C barn at 20% RH', [26, 20], [69.6, 'none']], ['26 C barn at 40% RH', [26, 40], [71.9, 'none']], ['26 C barn at 55% RH', [26, 55], [73.7, 'mild']], ['26 C barn at 70% RH', [26, 70], [75.4, 'mild']], ['30 C barn at 55% RH', [30, 55], [79.1, 'moderate']], ['THI just under 72 unrounded 22.8 C 87%', [22.8, 87], [72.0, 'mild']]]]\nfor label, args, expected in fixtures[N - 1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"4e438e7f49fa81cce69f326fde5945aaa726ca242cf01818f80ae7828f219897","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nN = 1\nobservations = []\ndef solve(t_c, rh):\n    thi = (1.8 * t_c + 32) - (0.55 - 0.0055 * rh) * (1.8 * t_c - 26)\n    thi = round(thi, 1)\n    if thi < 72:\n        level = \"none\"\n    elif thi < 79:\n        level = \"mild\"\n    elif thi < 89:\n        level = \"moderate\"\n    elif thi < 99:\n        level = \"severe\"\n    else:\n        level = \"emergency\"\n    return [thi, level]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['15 C barn at 20% RH', [15, 20], [58.6, 'none']], ['15 C barn at 40% RH', [15, 40], [58.7, 'none']], ['15 C barn at 55% RH', [15, 55], [58.8, 'none']], ['15 C barn at 70% RH', [15, 70], [58.8, 'none']], ['15 C barn at 85% RH', [15, 85], [58.9, 'none']], ['15 C barn at 100% RH', [15, 100], [59.0, 'none']], ['21 C barn at 20% RH', [21, 20], [64.6, 'none']], ['THI just under 72 unrounded 22.2 C 100%', [22.2, 100], [72.0, 'mild']]], [['21 C barn at 40% RH', [21, 40], [65.9, 'none']], ['21 C barn at 55% RH', [21, 55], [66.9, 'none']], ['21 C barn at 70% RH', [21, 70], [67.9, 'none']], ['21 C barn at 85% RH', [21, 85], [68.8, 'none']], ['21 C barn at 100% RH', [21, 100], [69.8, 'none']], ['22 C barn at 20% RH', [22, 20], [65.6, 'none']], ['22 C barn at 85% RH', [22, 85], [70.5, 'none']], ['THI just under 72 unrounded 22.7 C 89%', [22.7, 89], [72.0, 'mild']]], [['22 C barn at 55% RH', [22, 55], [68.2, 'none']], ['22 C barn at 70% RH', [22, 70], [69.4, 'none']], ['22 C barn at 85% RH', [22, 85], [70.5, 'none']], ['22 C barn at 100% RH', [22, 100], [71.6, 'none']], ['24 C barn at 20% RH', [24, 20], [67.6, 'none']], ['24 C barn at 40% RH', [24, 40], [69.5, 'none']], ['26 C barn at 55% RH', [26, 55], [73.7, 'mild']], ['THI on 79 boundary 26.3 C 97%', [26.3, 97], [79.0, 'moderate']]], [['24 C barn at 70% RH', [24, 70], [72.4, 'mild']], ['24 C barn at 85% RH', [24, 85], [73.8, 'mild']], ['24 C barn at 100% RH', [24, 100], [75.2, 'mild']], ['25 C barn at 20% RH', [25, 20], [68.6, 'none']], ['25 C barn at 40% RH', [25, 40], [70.7, 'none']], ['25 C barn at 55% RH', [25, 55], [72.3, 'mild']], ['29 C barn at 20% RH', [29, 20], [72.7, 'mild']], ['THI just under 72 unrounded 22.3 C 98%', [22.3, 98], [72.0, 'mild']]], [['25 C barn at 85% RH', [25, 85], [75.4, 'mild']], ['25 C barn at 100% RH', [25, 100], [77.0, 'mild']], ['26 C barn at 20% RH', [26, 20], [69.6, 'none']], ['26 C barn at 40% RH', [26, 40], [71.9, 'none']], ['26 C barn at 55% RH', [26, 55], [73.7, 'mild']], ['26 C barn at 70% RH', [26, 70], [75.4, 'mild']], ['30 C barn at 55% RH', [30, 55], [79.1, 'moderate']], ['THI just under 72 unrounded 22.8 C 87%', [22.8, 87], [72.0, 'mild']]]]\nfor label, args, expected in fixtures[N - 1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"Stipulated deterministic teaching model of an operational weather index; coefficients and thresholds are fixed by the contract and no claim of standards conformance is made. 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.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-weather_index_computation-livestock-thi-classify-after-rounding","generated_at":"2026-09-29T14:48:25.477185+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Dairy heat-stress alerts and cooling automation key off THI bands.","repair":"Round THI to 0.1 before classification.","root_cause":"Bands are evaluated on the unrounded THI while the rounded value is reported.","sha256":"a10c1d13431d013cfc568570db1bfd79dec67812e1a2236e5479f8319921109c","title":"Livestock temperature-humidity index: classify after rounding · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":38.649,"exit_code":1,"observations":[{"actual":[58.5,"none"],"check":"15 C barn at 20% RH","expected":[58.6,"none"],"passed":false},{"actual":[58.6,"none"],"check":"15 C barn at 40% RH","expected":[58.7,"none"],"passed":false},{"actual":[58.7,"none"],"check":"15 C barn at 55% RH","expected":[58.8,"none"],"passed":false},{"actual":[58.8,"none"],"check":"15 C barn at 70% RH","expected":[58.8,"none"],"passed":true},{"actual":[58.9,"none"],"check":"15 C barn at 85% RH","expected":[58.9,"none"],"passed":true},{"actual":[59.0,"none"],"check":"15 C barn at 100% RH","expected":[59.0,"none"],"passed":true},{"actual":[64.6,"none"],"check":"21 C barn at 20% RH","expected":[64.6,"none"],"passed":true},{"actual":[71.9,"none"],"check":"THI just under 72 unrounded 22.2 C 100%","expected":[72.0,"mild"],"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"15 C barn at 20% RH\", \"actual\": [58.5, \"none\"], \"expected\": [58.6, \"none\"], \"passed\": false}, {\"check\": \"15 C barn at 40% RH\", \"actual\": [58.6, \"none\"], \"expected\": [58.7, \"none\"], \"passed\": false}, {\"check\": \"15 C barn at 55% RH\", \"actual\": [58.7, \"none\"], \"expected\": [58.8, \"none\"], \"passed\": false}, {\"check\": \"15 C barn at 70% RH\", \"actual\": [58.8, \"none\"], \"expected\": [58.8, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 85% RH\", \"actual\": [58.9, \"none\"], \"expected\": [58.9, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 100% RH\", \"actual\": [59.0, \"none\"], \"expected\": [59.0, \"none\"], \"passed\": true}, {\"check\": \"21 C barn at 20% RH\", \"actual\": [64.6, \"none\"], \"expected\": [64.6, \"none\"], \"passed\": true}, {\"check\": \"THI just under 72 unrounded 22.2 C 100%\", \"actual\": [71.9, \"none\"], \"expected\": [72.0, \"mild\"], \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":37.34,"exit_code":1,"observations":[{"actual":[58.6,"none"],"check":"15 C barn at 20% RH","expected":[58.6,"none"],"passed":true},{"actual":[58.7,"none"],"check":"15 C barn at 40% RH","expected":[58.7,"none"],"passed":true},{"actual":[58.8,"none"],"check":"15 C barn at 55% RH","expected":[58.8,"none"],"passed":true},{"actual":[58.8,"none"],"check":"15 C barn at 70% RH","expected":[58.8,"none"],"passed":true},{"actual":[58.9,"none"],"check":"15 C barn at 85% RH","expected":[58.9,"none"],"passed":true},{"actual":[59.0,"none"],"check":"15 C barn at 100% RH","expected":[59.0,"none"],"passed":true},{"actual":[64.6,"none"],"check":"21 C barn at 20% RH","expected":[64.6,"none"],"passed":true},{"actual":[72.0,"none"],"check":"THI just under 72 unrounded 22.2 C 100%","expected":[72.0,"mild"],"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"15 C barn at 20% RH\", \"actual\": [58.6, \"none\"], \"expected\": [58.6, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 40% RH\", \"actual\": [58.7, \"none\"], \"expected\": [58.7, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 55% RH\", \"actual\": [58.8, \"none\"], \"expected\": [58.8, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 70% RH\", \"actual\": [58.8, \"none\"], \"expected\": [58.8, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 85% RH\", \"actual\": [58.9, \"none\"], \"expected\": [58.9, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 100% RH\", \"actual\": [59.0, \"none\"], \"expected\": [59.0, \"none\"], \"passed\": true}, {\"check\": \"21 C barn at 20% RH\", \"actual\": [64.6, \"none\"], \"expected\": [64.6, \"none\"], \"passed\": true}, {\"check\": \"THI just under 72 unrounded 22.2 C 100%\", \"actual\": [72.0, \"none\"], \"expected\": [72.0, \"mild\"], \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":39.542,"exit_code":0,"observations":[{"actual":[58.6,"none"],"check":"15 C barn at 20% RH","expected":[58.6,"none"],"passed":true},{"actual":[58.7,"none"],"check":"15 C barn at 40% RH","expected":[58.7,"none"],"passed":true},{"actual":[58.8,"none"],"check":"15 C barn at 55% RH","expected":[58.8,"none"],"passed":true},{"actual":[58.8,"none"],"check":"15 C barn at 70% RH","expected":[58.8,"none"],"passed":true},{"actual":[58.9,"none"],"check":"15 C barn at 85% RH","expected":[58.9,"none"],"passed":true},{"actual":[59.0,"none"],"check":"15 C barn at 100% RH","expected":[59.0,"none"],"passed":true},{"actual":[64.6,"none"],"check":"21 C barn at 20% RH","expected":[64.6,"none"],"passed":true},{"actual":[72.0,"mild"],"check":"THI just under 72 unrounded 22.2 C 100%","expected":[72.0,"mild"],"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"15 C barn at 20% RH\", \"actual\": [58.6, \"none\"], \"expected\": [58.6, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 40% RH\", \"actual\": [58.7, \"none\"], \"expected\": [58.7, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 55% RH\", \"actual\": [58.8, \"none\"], \"expected\": [58.8, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 70% RH\", \"actual\": [58.8, \"none\"], \"expected\": [58.8, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 85% RH\", \"actual\": [58.9, \"none\"], \"expected\": [58.9, \"none\"], \"passed\": true}, {\"check\": \"15 C barn at 100% RH\", \"actual\": [59.0, \"none\"], \"expected\": [59.0, \"none\"], \"passed\": true}, {\"check\": \"21 C barn at 20% RH\", \"actual\": [64.6, \"none\"], \"expected\": [64.6, \"none\"], \"passed\": true}, {\"check\": \"THI just under 72 unrounded 22.2 C 100%\", \"actual\": [72.0, \"mild\"], \"expected\": [72.0, \"mild\"], \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}