| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 2,234 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) |
| February | 494 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) |
| March | 85 (Medium) | 7 (Low) | 8 (Low) | 0 (Low) | 0 (Low) |
| April | 10 (Low) | 384 (Very high) | 12 (Low) | 38 (Medium) | 9 (Low) |
| May | 77 (Medium) | 7 (Low) | 391 (Very high) | 299 (Very high) | 263 (High) |
| June | 31 (Medium) | 2 (Low) | 408 (Very high) | 165 (Very high) | 478 (Very high) |
| July | 2 (Low) | 2 (Low) | 25 (Low) | 8 (Low) | 7 (Low) |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 4 (Low) | 4 (Low) |
| September | 2 (Low) | 1 (Low) | 6 (Low) | 2 (Low) | 4 (Low) |
| October | 4 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 2 (Low) |
| November | 11 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) |
| December | 19 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |