| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 493 (Very high) | 1 (Low) | 8 (Low) | 1 (Low) | 1 (Low) |
| February | 696 (Very high) | 0 (Low) | 9 (Low) | 4 (Low) | 2 (Low) |
| March | 463 (Very high) | 1,934 (Very high) | 14 (Low) | 6 (Low) | 2 (Low) |
| April | 41 (Medium) | 417 (Very high) | 10 (Low) | 42 (Medium) | 11 (Low) |
| May | 39 (Medium) | 11 (Low) | 93 (High) | 97 (High) | 104 (Medium) |
| June | 17 (Low) | 2 (Low) | 67 (Medium) | 21 (Medium) | 155 (Medium) |
| July | 5 (Low) | 1 (Low) | 10 (Low) | 10 (Low) | 11 (Low) |
| August | 5 (Low) | 2 (Low) | 8 (Low) | 3 (Low) | 3 (Low) |
| September | 2 (Low) | 5 (Low) | 8 (Low) | 3 (Low) | 1 (Low) |
| October | 14 (Low) | 15 (Low) | 3 (Low) | 2 (Low) | 2 (Low) |
| November | 3 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) |
| December | 17 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |