| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 407 (Very high) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) |
| February | 1,294 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) |
| March | 49 (Medium) | 23 (Low) | 8 (Low) | 0 (Low) | 0 (Low) |
| April | 2 (Low) | 22 (Low) | 3 (Low) | 2 (Low) | 0 (Low) |
| May | 2 (Low) | 3 (Low) | 64 (Medium) | 16 (Low) | 13 (Low) |
| June | 3 (Low) | 0 (Low) | 12 (Low) | 4 (Low) | 10 (Low) |
| July | 3 (Low) | 0 (Low) | 12 (Low) | 3 (Low) | 3 (Low) |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) |
| September | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) |
| October | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| November | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) |
| December | 369 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |