| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 732 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |
| February | 1,406 (Very high) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) |
| March | 79 (Medium) | 292 (High) | 10 (Low) | 3 (Low) | 1 (Low) |
| April | 87 (Medium) | 19 (Low) | 17 (Low) | 31 (Medium) | 129 (Medium) |
| May | 22 (Low) | 0 (Low) | 199 (Very high) | 99 (High) | 749 (Very high) |
| June | 4 (Low) | 0 (Low) | 121 (High) | 75 (High) | 5 (Low) |
| July | 1 (Low) | 0 (Low) | 38 (Medium) | 9 (Low) | 1 (Low) |
| August | 2 (Low) | 0 (Low) | 12 (Low) | 3 (Low) | 0 (Low) |
| September | 2 (Low) | 0 (Low) | 10 (Low) | 2 (Low) | 1 (Low) |
| October | 5 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) |
| November | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) |
| December | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |