| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 794 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) |
| February | 381 (Very high) | 1 (Low) | 8 (Low) | 0 (Low) | 1 (Low) |
| March | 124 (High) | 35 (Medium) | 6 (Low) | 1 (Low) | 2 (Low) |
| April | 1 (Low) | 605 (Very high) | 12 (Low) | 16 (Low) | 5 (Low) |
| May | 4 (Low) | 2 (Low) | 66 (Medium) | 7 (Low) | 11 (Low) |
| June | 3 (Low) | 0 (Low) | 28 (Low) | 3 (Low) | 43 (Low) |
| July | 1 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 3 (Low) |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 4 (Low) |
| September | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) |
| October | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) |
| November | — | — | — | — | — |
| December | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |