| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 257 (Very high) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) |
| February | 257 (Very high) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) |
| March | 37 (Medium) | 1,048 (Very high) | 11 (Low) | 6 (Low) | 0 (Low) |
| April | 2 (Low) | 36 (Medium) | 11 (Low) | 33 (Medium) | 2 (Low) |
| May | 5 (Low) | 4 (Low) | 217 (Very high) | 47 (Medium) | 240 (High) |
| June | 6 (Low) | 0 (Low) | 219 (Very high) | 63 (High) | 109 (Medium) |
| July | 2 (Low) | 0 (Low) | 55 (Medium) | 5 (Low) | 6 (Low) |
| August | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 1 (Low) |
| September | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) |
| October | 10 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) |
| November | 232 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |
| December | 307 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) |