| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 712 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) |
| February | 370 (Very high) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) |
| March | 81 (Medium) | 1,220 (Very high) | 9 (Low) | 12 (Low) | 7 (Low) |
| April | 11 (Low) | 1,453 (Very high) | 11 (Low) | 28 (Medium) | 9 (Low) |
| May | 17 (Low) | 1 (Low) | 201 (Very high) | 56 (High) | 926 (Very high) |
| June | 76 (Medium) | 0 (Low) | 71 (Medium) | 26 (Medium) | 163 (Medium) |
| July | 2 (Low) | 0 (Low) | 19 (Low) | 4 (Low) | 6 (Low) |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 3 (Low) |
| September | — | — | — | — | — |
| October | 46 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) |
| November | 24 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| December | 32 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |