| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 462 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| February | 292 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| March | 113 (High) | 150 (High) | 6 (Low) | 0 (Low) | 0 (Low) |
| April | 14 (Low) | 33 (Medium) | 7 (Low) | 24 (Medium) | 0 (Low) |
| May | 19 (Low) | 6 (Low) | 169 (Very high) | 64 (High) | 420 (Very high) |
| June | 17 (Low) | 0 (Low) | 53 (Medium) | 20 (Medium) | 62 (Medium) |
| July | 4 (Low) | 0 (Low) | 21 (Low) | 6 (Low) | 11 (Low) |
| August | 1 (Low) | 0 (Low) | 10 (Low) | 2 (Low) | 0 (Low) |
| September | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) |
| October | 17 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) |
| November | 12 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) |
| December | 28 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |