| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 1,004 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) |
| February | 746 (Very high) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) |
| March | 356 (Very high) | 522 (Very high) | 5 (Low) | 1 (Low) | 0 (Low) |
| April | 36 (Medium) | 5,506 (Very high) | 28 (Low) | 33 (Medium) | 17 (Low) |
| May | 147 (High) | 30 (Medium) | 458 (Very high) | 87 (High) | 326 (High) |
| June | 31 (Medium) | 3 (Low) | 341 (Very high) | 38 (Medium) | 781 (Very high) |
| July | 4 (Low) | 0 (Low) | 10 (Low) | 4 (Low) | 2 (Low) |
| August | 1 (Low) | 1 (Low) | 4 (Low) | 2 (Low) | 1 (Low) |
| September | 2 (Low) | 3 (Low) | 3 (Low) | 1 (Low) | 0 (Low) |
| October | 6 (Low) | 6 (Low) | 2 (Low) | 1 (Low) | 1 (Low) |
| November | 9 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |
| December | 22 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |