Month | Highest mean total PET (mm) | Observed year | Coefficient of determination (%) |
April | 152.7 | 2010 | 78.8 |
May | 197.1 | 2008 | 66.73 |
June | 186.2 | 2008 | 55.13 |
July | 205.5 | 2007 | 10.37 |
August | 180.6 | 2008 | 56.87 |
September | 131.8 | 2011 | 49.19 |