| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 231 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |
| February | 716 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) |
| March | 203 (Very high) | 469 (Very high) | 11 (Low) | 1 (Low) | 0 (Low) |
| April | 11 (Low) | 563 (Very high) | 7 (Low) | 12 (Low) | 0 (Low) |
| May | 33 (Medium) | 7 (Low) | 206 (Very high) | 63 (High) | 208 (High) |
| June | 19 (Low) | 1 (Low) | 73 (Medium) | 12 (Low) | 169 (Medium) |
| July | 1 (Low) | 1 (Low) | 21 (Low) | 2 (Low) | 4 (Low) |
| August | 2 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 2 (Low) |
| September | 1 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 1 (Low) |
| October | — | — | — | — | — |
| November | 27 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |
| December | 104 (High) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) |