| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 229 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) |
| February | 627 (Very high) | 1 (Low) | 35 (Medium) | 0 (Low) | 1 (Low) |
| March | 19 (Low) | 3,114 (Very high) | 10 (Low) | 7 (Low) | 0 (Low) |
| April | 16 (Low) | 173 (High) | 23 (Low) | 83 (High) | 31 (Low) |
| May | 64 (Medium) | 11 (Low) | 525 (Very high) | 287 (Very high) | 599 (Very high) |
| June | 9 (Low) | 6 (Low) | 205 (Very high) | 29 (Medium) | 88 (Medium) |
| July | 3 (Low) | 1 (Low) | 98 (High) | 10 (Low) | 6 (Low) |
| August | 2 (Low) | 1 (Low) | 6 (Low) | 4 (Low) | 1 (Low) |
| September | 50 (Medium) | 0 (Low) | 7 (Low) | 3 (Low) | 0 (Low) |
| October | 65 (Medium) | 2 (Low) | 4 (Low) | 1 (Low) | 1 (Low) |
| November | 389 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) |
| December | 1,655 (Very high) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) |