| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 675 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) |
| February | 820 (Very high) | 0 (Low) | 17 (Low) | 0 (Low) | 1 (Low) |
| March | 1,422 (Very high) | 2,441 (Very high) | 16 (Low) | 0 (Low) | 0 (Low) |
| April | 20 (Low) | 363 (Very high) | 6 (Low) | 6 (Low) | 1 (Low) |
| May | 59 (Medium) | 21 (Low) | 119 (High) | 24 (Medium) | 195 (Medium) |
| June | 22 (Low) | 0 (Low) | 40 (Medium) | 5 (Low) | 211 (High) |
| July | 2 (Low) | 0 (Low) | 10 (Low) | 3 (Low) | 11 (Low) |
| August | 2 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 1 (Low) |
| September | 1 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 3 (Low) |
| October | 20 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) |
| November | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |
| December | 25 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |