| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 526 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) |
| February | 1,159 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) |
| March | 697 (Very high) | 17,545 (Very high) | 9 (Low) | 0 (Low) | 0 (Low) |
| April | 36 (Medium) | 22,056 (Very high) | 68 (Medium) | 12 (Low) | 6 (Low) |
| May | 33 (Medium) | 80 (Medium) | 112 (High) | 32 (Medium) | 252 (High) |
| June | 9 (Low) | 18 (Low) | 74 (Medium) | 31 (Medium) | 49 (Low) |
| July | 15 (Low) | 8 (Low) | 34 (Medium) | 5 (Low) | 5 (Low) |
| August | 2 (Low) | 3 (Low) | 4 (Low) | 5 (Low) | 4 (Low) |
| September | 2 (Low) | 6 (Low) | 5 (Low) | 3 (Low) | 3 (Low) |
| October | 2 (Low) | 10 (Low) | 3 (Low) | 1 (Low) | 1 (Low) |
| November | 2 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) |
| December | 6 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) |