| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 803 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| February | 503 (Very high) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) |
| March | 171 (High) | 837 (Very high) | 12 (Low) | 3 (Low) | 1 (Low) |
| April | 5 (Low) | 816 (Very high) | 28 (Low) | 37 (Medium) | 7 (Low) |
| May | 3 (Low) | 0 (Low) | 197 (Very high) | 38 (Medium) | 68 (Medium) |
| June | 8 (Low) | 1 (Low) | 155 (Very high) | 45 (Medium) | 122 (Medium) |
| July | 2 (Low) | 0 (Low) | 314 (Very high) | 10 (Low) | 11 (Low) |
| August | 1 (Low) | 1 (Low) | 4 (Low) | 3 (Low) | 1 (Low) |
| September | 2 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) |
| October | 9 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) |
| November | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| December | 73 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |