Evapotranspiration Calculations
St Helens Aerodrome - May 2013 daily calculations
| Date |
Evapotrans- piration (mm) 0000- 2400 |
Rain (mm) 0900- 0900 |
Pan Evaporation (mm) 0900- 0900 |
Max Temp |
Min Temp |
Max Rel Hum (%) |
Min Rel Hum (%) |
Average 10m Wind Speed (m/sec) |
Solar Radiation (MJ/sq m) |
| 01/05/2013 | 1.2 | 0.0 | | 14.6 | 8.2 | 92 | 54 | 1.83 | 5.51 |
| 02/05/2013 | 1.9 | 5.4 | | 15.2 | 2.8 | 91 | 40 | 3.09 | 12.07 |
| 03/05/2013 | 2.4 | 0.0 | | 17.9 | 6.3 | 90 | 51 | 6.17 | 5.18 |
| 04/05/2013 | 2.4 | 0.8 | | 14.6 | 7.5 | 86 | 34 | 4.77 | 12.07 |
| 05/05/2013 | 1.5 | 0.0 | | 14.9 | 1.8 | 92 | 48 | 2.37 | 11.52 |
| 06/05/2013 | 1.7 | 0.0 | | 15.7 | 3.3 | 94 | 43 | 2.96 | 11.44 |
| 07/05/2013 | 1.2 | 0.2 | | 15.8 | 3.7 | 96 | 64 | 2.75 | 5.14 |
| 08/05/2013 | 1.3 | 1.2 | | 19.2 | 6.4 | 97 | 70 | 2.71 | 8.30 |
| 09/05/2013 | 1.7 | 0.0 | | 20.1 | 9.9 | 92 | 52 | 2.60 | 7.63 |
| 10/05/2013 | 1.2 | 0.2 | | 18.9 | 13.3 | 97 | 67 | 2.13 | 9.44 |
| 11/05/2013 | 0.9 | 0.0 | | 18.4 | 11.5 | 96 | 83 | 2.37 | 4.78 |
| 12/05/2013 | 1.1 | 0.0 | | 19.7 | 11.6 | 96 | 73 | 1.77 | 8.00 |
| 13/05/2013 | 0.8 | 1.8 | | 15.9 | 11.8 | 95 | 81 | 2.06 | 3.08 |
| 14/05/2013 | 1.0 | 6.0 | | 13.8 | 7.9 | 97 | 70 | 3.16 | 7.99 |
| 15/05/2013 | 1.2 | 0.4 | | 16.6 | 5.2 | 98 | 55 | 2.26 | 6.78 |
| 16/05/2013 | 1.0 | 10.6 | | 13.7 | 7.6 | 97 | 71 | 3.30 | 3.79 |
| 17/05/2013 | 1.3 | 3.2 | | 16.1 | 8.6 | 85 | 59 | 2.54 | 8.10 |
| 18/05/2013 | 1.5 | 0.0 | | 15.7 | 8.1 | 88 | 45 | 2.82 | 8.15 |
| 19/05/2013 | 1.1 | 0.6 | | 15.4 | 3.3 | 94 | 48 | 1.91 | 9.43 |
| 20/05/2013 | 1.0 | 0.0 | | 13.6 | 1.8 | 96 | 57 | 2.41 | 8.25 |
| 21/05/2013 | 0.8 | 0.8 | | 14.8 | 4.8 | 97 | 65 | 1.56 | 7.12 |
| Totals: | 28.2 | 31.2 | | | | | | | |
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