| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 399 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |
| February | 458 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) |
| March | 643 (Very high) | 6,652 (Very high) | 8 (Low) | 2 (Low) | 0 (Low) |
| April | 11 (Low) | 9,886 (Very high) | 10 (Low) | 45 (Medium) | 10 (Low) |
| May | 39 (Medium) | 1 (Low) | 150 (High) | 58 (High) | 495 (Very high) |
| June | 128 (High) | 0 (Low) | 97 (High) | 22 (Medium) | 160 (Medium) |
| July | 2 (Low) | 0 (Low) | 23 (Low) | 5 (Low) | 6 (Low) |
| August | 1 (Low) | 0 (Low) | 8 (Low) | 2 (Low) | 2 (Low) |
| September | 2 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 1 (Low) |
| October | 4 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) |
| November | 22 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) |
| December | 49 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |