| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 2,031 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) |
| February | 236 (Very high) | 0 (Low) | 5 (Low) | 4 (Low) | 0 (Low) |
| March | 1,194 (Very high) | 986 (Very high) | 11 (Low) | 4 (Low) | 3 (Low) |
| April | 9 (Low) | 1,306 (Very high) | 21 (Low) | 28 (Medium) | 7 (Low) |
| May | 32 (Medium) | 3 (Low) | 465 (Very high) | 62 (High) | 303 (High) |
| June | 14 (Low) | 1 (Low) | 121 (High) | 11 (Low) | 49 (Low) |
| July | 1 (Low) | 1 (Low) | 42 (Medium) | 3 (Low) | 3 (Low) |
| August | — | — | — | — | — |
| September | 2 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) |
| October | 3 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |
| November | 264 (Very high) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| December | 194 (High) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) |