| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 223 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) |
| February | 1,360 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 1 (Low) |
| March | 819 (Very high) | 3,161 (Very high) | 13 (Low) | 5 (Low) | 0 (Low) |
| April | 18 (Low) | 5,838 (Very high) | 25 (Low) | 41 (Medium) | 10 (Low) |
| May | 18 (Low) | 66 (Medium) | 211 (Very high) | 49 (Medium) | 108 (Medium) |
| June | 15 (Low) | 3 (Low) | 272 (Very high) | 46 (Medium) | 312 (High) |
| July | 4 (Low) | 5 (Low) | 53 (Medium) | 13 (Low) | 16 (Low) |
| August | 1 (Low) | 0 (Low) | 7 (Low) | 5 (Low) | 1 (Low) |
| September | 1 (Low) | 1 (Low) | 5 (Low) | 2 (Low) | 3 (Low) |
| October | 8 (Low) | 1 (Low) | 2 (Low) | 2 (Low) | 1 (Low) |
| November | 5 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) |
| December | 34 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |