Evapotranspiration Calculations

St Helens Aerodrome - September 2025 daily calculations

DateEvapotrans-
piration (mm) 0000- 2400
Rain (mm) 0900- 0900Pan Evaporation (mm) 0900- 0900Max TempMin TempMax Rel Hum (%)Min Rel Hum (%)Average 10m Wind Speed (m/sec)Solar Radiation (MJ/sq m)
01/09/20252.60.0 18.55.989322.6914.33
02/09/20251.90.0 14.92.991624.979.70
03/09/20252.00.6 13.410.184584.179.40
04/09/20252.52.6 13.47.785343.8712.66
05/09/20252.20.4 13.71.090352.5715.11
06/09/20252.20.2 16.32.396452.4114.88
07/09/20251.10.0 15.24.595782.845.24
08/09/20252.85.2 16.77.889587.0715.34
09/09/20252.71.0 15.87.481393.4614.96
10/09/20251.90.0 13.72.092451.9015.06
11/09/20252.50.0 15.94.090382.5615.86
12/09/20252.40.0 18.86.283472.1314.39
13/09/20251.90.0 16.76.589612.849.91
14/09/20253.10.0 17.610.876505.969.63
15/09/20254.00.0 20.813.372374.8615.53
16/09/20253.40.2 16.012.086426.9314.28
17/09/20253.21.8 15.08.381364.5216.76
18/09/20252.80.0 16.65.681443.4915.37
19/09/20252.61.0 17.29.693544.9912.88
20/09/20253.50.4 16.17.177314.8116.74
Totals:51.313.4       

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