Two HandsForms / rainfall ledger
Ardnamurchan Lighthouse, 1870–1879
UK rainfall ledger, 10-year sheetGemma-4-31B-ITidentity: 12 months = written annual total
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6 of 10 years accepted; routed: 1872, 1873, 1874, 1876
A year is accepted only when its twelve monthly values sum to the clerk's handwritten annual total (within 0.01 in).
| Month | 1870 | 1871 | 1872 | 1873 | 1874 | 1875 | 1876 | 1877 | 1878 | 1879 |
|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 2.37 | 3.64 | 6.82 | 7.32 | 6.04 | 6.37 | 5.19 | 6.72 | 5.55 | 2.19 |
| Feb | 1.49 | 2.71 | 4.64 | 3.82 | 2.80 | 1.72 | 5.23 | 7.29 | 2.03 | 2.49 |
| Mar | 0.97 | 2.74 | 2.39 | 1.99 | 4.83 | 1.93 | 5.74 | 3.44 | 3.70 | 3.39 |
| Apr | 1.82 | 1.17 | 2.02 | 6.13 | 5.00 | 2.20 | 2.21 | 2.06 | 1.94 | 1.35 |
| May | 2.09 | 1.30 | 2.70 | 2.29 | 1.49 | 3.48 | 6.90 | 2.14 | 2.38 | 2.56 |
| Jun | 1.91 | 0.81 | 5.49 | 3.08 | 1.97 | 2.58 | 4.24 | 5.24 | 3.21 | 1.85 |
| Jul | 3.20 | 3.30 | 3.37 | 3.99 | 3.17 | 1.97 | 4.12 | 4.84 | 1.81 | 5.69 |
| Aug | 1.84 | 2.93 | 3.12 | 4.72 | 5.24 | 6.17 | 4.78 | 3.21 | 4.03 | 3.46 |
| Sep | 4.95 | 2.32 | 6.42 | 3.92 | 9.64 | 2.52 | 2.44 | 2.75 | 5.42 | 8.22 |
| Oct | 5.10 | 5.19 | 7.74 | 8.30 | 7.85 | 4.19 | 7.75 | 7.42 | 7.43 | 3.25 |
| Nov | 2.94 | 4.28 | 6.49 | 5.44 | 4.61 | 4.65 | 2.08 | 11.90 | 4.46 | 2.33 |
| Dec | 2.30 | 7.22 | 4.04 | 5.30 | 3.07 | 3.70 | 3.99 | 7.69 | 3.77 | 3.88 |
| Written total | 30.98 | 37.61 | 55.18 | 47.34 | 53.44 | 41.48 | 48.46 | 64.70 | 45.73 | 40.66 |
| Sum of months | 30.98 | 37.61 | 55.24 | 56.30 | 55.71 | 41.48 | 54.67 | 64.70 | 45.73 | 40.66 |
| ✓ | ✓ | ✕ | ✕ | ✕ | ✓ | ✕ | ✓ | ✓ | ✓ |
Values as read by Gemma-4-31B-IT (whole sheet + 3 zoomed strips (page + 3 strips, docs/sources/ledger-rescue-pilot.md §3)). Amber shading: a routed year. Orange numbers differ from the volunteers' transcription (hover for their value); the gate never sees the volunteers' values, they only grade it.
Source: Rainfall Rescue, ARDNAMURCHAN-LIGHTHOUSE PDF page 4 (https://raw.githubusercontent.com/ed-hawkins/rainfall-rescue/master/DATA/ARDNAMURCHAN-LIGHTHOUSE/ARDNAMURCHAN-LIGHTHOUSE.pdf), volunteer transcription sourceTYRain_1870-1879_11_pt3-page-059.csv. Hawkins et al. (2022), Geoscience Data Journal; the source repository carries no licence file, so the sheet image is linked, not copied.