| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 259 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) |
| February | 460 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| March | 1,101 (Very high) | 12,595 (Very high) | 13 (Low) | 4 (Low) | 0 (Low) |
| April | 13 (Low) | 13,230 (Very high) | 39 (Medium) | 112 (Very high) | 2 (Low) |
| May | 11 (Low) | 11 (Low) | 341 (Very high) | 85 (High) | 536 (Very high) |
| June | 5 (Low) | 1 (Low) | 43 (Medium) | 8 (Low) | 273 (High) |
| July | 2 (Low) | 1 (Low) | 9 (Low) | 1 (Low) | 4 (Low) |
| August | 3 (Low) | 1 (Low) | 10 (Low) | 2 (Low) | 2 (Low) |
| September | 5 (Low) | 2 (Low) | 13 (Low) | 1 (Low) | 2 (Low) |
| October | 26 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) |
| November | 218 (Very high) | 4 (Low) | 2 (Low) | 0 (Low) | 1 (Low) |
| December | 128 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |