| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 669 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |
| February | 1,717 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) |
| March | 388 (Very high) | 315 (Very high) | 6 (Low) | 0 (Low) | 0 (Low) |
| April | 14 (Low) | 457 (Very high) | 12 (Low) | 17 (Low) | 4 (Low) |
| May | 18 (Low) | 10 (Low) | 230 (Very high) | 15 (Low) | 326 (High) |
| June | 9 (Low) | 1 (Low) | 131 (High) | 25 (Medium) | 29 (Low) |
| July | 1 (Low) | 1 (Low) | 58 (Medium) | 6 (Low) | 2 (Low) |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 5 (Low) | 1 (Low) |
| September | 3 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 1 (Low) |
| October | 2 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 1 (Low) |
| November | 9 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) |
| December | 13 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |