| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 309 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| February | 246 (Very high) | 0 (Low) | 22 (Low) | 0 (Low) | 0 (Low) |
| March | 60 (Medium) | 1,185 (Very high) | 6 (Low) | 3 (Low) | 3 (Low) |
| April | 60 (Medium) | 71 (Medium) | 15 (Low) | 26 (Medium) | 212 (High) |
| May | 10 (Low) | 2 (Low) | 89 (High) | 58 (High) | 311 (High) |
| June | 7 (Low) | 0 (Low) | 93 (High) | 57 (High) | 18 (Low) |
| July | 1 (Low) | 0 (Low) | 19 (Low) | 6 (Low) | 0 (Low) |
| August | 0 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 2 (Low) |
| September | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) |
| October | 8 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) |
| November | 11 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) |
| December | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |