| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 374 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| February | 59 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) |
| March | 45 (Medium) | 34 (Medium) | 8 (Low) | 0 (Low) | 2 (Low) |
| April | 17 (Low) | 244 (High) | 22 (Low) | 29 (Medium) | 8 (Low) |
| May | 24 (Low) | 2 (Low) | 92 (High) | 47 (Medium) | 63 (Medium) |
| June | 71 (Medium) | 4 (Low) | 176 (Very high) | 53 (High) | 117 (Medium) |
| July | 6 (Low) | 0 (Low) | 260 (Very high) | 6 (Low) | 11 (Low) |
| August | 1 (Low) | 0 (Low) | 9 (Low) | 7 (Low) | 3 (Low) |
| September | 1 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 2 (Low) |
| October | 19 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) |
| November | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| December | 104 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) |