| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 330 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| February | 513 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| March | 41 (Medium) | 1,017 (Very high) | 3 (Low) | 3 (Low) | 0 (Low) |
| April | 14 (Low) | 399 (Very high) | 36 (Medium) | 139 (Very high) | 13 (Low) |
| May | 9 (Low) | 11 (Low) | 238 (Very high) | 184 (Very high) | 278 (High) |
| June | 5 (Low) | 7 (Low) | 96 (High) | 33 (Medium) | 200 (High) |
| July | 2 (Low) | 1 (Low) | 46 (Medium) | 14 (Low) | 5 (Low) |
| August | 8 (Low) | 0 (Low) | 6 (Low) | 4 (Low) | 1 (Low) |
| September | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 1 (Low) |
| October | 43 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) |
| November | 332 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |
| December | 1,003 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |