| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 907 (Very high) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) |
| February | 852 (Very high) | 0 (Low) | 27 (Low) | 0 (Low) | 0 (Low) |
| March | 124 (High) | 104 (High) | 16 (Low) | 3 (Low) | 10 (Low) |
| April | 45 (Medium) | 56 (Medium) | 13 (Low) | 7 (Low) | 9 (Low) |
| May | 23 (Low) | 37 (Medium) | 89 (High) | 44 (Medium) | 261 (High) |
| June | 8 (Low) | 14 (Low) | 86 (High) | 16 (Low) | 80 (Medium) |
| July | 8 (Low) | 3 (Low) | 22 (Low) | 22 (Medium) | 2 (Low) |
| August | 4 (Low) | 1 (Low) | 9 (Low) | 4 (Low) | 2 (Low) |
| September | 10 (Low) | 0 (Low) | 7 (Low) | 3 (Low) | 0 (Low) |
| October | 28 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) |
| November | 43 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |
| December | 281 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |