| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 667 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| February | 282 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) |
| March | 1,467 (Very high) | 2,452 (Very high) | 22 (Low) | 2 (Low) | 0 (Low) |
| April | 30 (Medium) | 3,105 (Very high) | 30 (Medium) | 110 (Very high) | 2 (Low) |
| May | 83 (Medium) | 12 (Low) | 232 (Very high) | 134 (Very high) | 453 (Very high) |
| June | 8 (Low) | 4 (Low) | 44 (Medium) | 16 (Low) | 131 (Medium) |
| July | 4 (Low) | 2 (Low) | 21 (Low) | 8 (Low) | 2 (Low) |
| August | 2 (Low) | 1 (Low) | 7 (Low) | 2 (Low) | 0 (Low) |
| September | 2 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 0 (Low) |
| October | 35 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) |
| November | 164 (High) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) |
| December | 242 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |