| Month | duration of the period with temperatures above 5˚C (day) | amount of FAR coming on 1 cm2 during this period, kcal | ||||
| 2011 | 2012 | 2013 | 2011 | 2012 | 2013 | |
| March | 16 | 7 | 30 | 1.97 | 0.86 | 3.82 |
| April-October | 214 | 214 | 214 | 47.95 | 47.95 | 47.95 |
| November | 2 | 30 | 30 | 0.08 | 1.19 | 1.19 |
| During the growing season | 232 | 251 | 274 | 50.00 | 50.00 | 52.96 |