| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 527 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| February | 1,467 (Very high) | 0 (Low) | 17 (Low) | 0 (Low) | 0 (Low) |
| March | 356 (Very high) | 550 (Very high) | 13 (Low) | 2 (Low) | 0 (Low) |
| April | 9 (Low) | 603 (Very high) | 31 (Medium) | 9 (Low) | 1 (Low) |
| May | 5 (Low) | 3 (Low) | 103 (High) | 13 (Low) | 212 (High) |
| June | 2 (Low) | 2 (Low) | 97 (High) | 12 (Low) | 12 (Low) |
| July | 1 (Low) | 0 (Low) | 28 (Low) | 3 (Low) | 1 (Low) |
| August | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) |
| September | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) |
| October | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |
| November | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| December | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |