| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 506 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 36 (Medium) | 0 (Low) | 7 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 1 | 3 |
| February | 239 (Very high) | 0 (Low) | 8 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 388 (Very high) | 8 (Low) | 1 (Low) | 2 (Low) | 3 (Low) | 3 (Low) | 4 (Low) | 14 (Low) | 3 | 3 |
| March | 252 (Very high) | 3,889 (Very high) | 26 (Low) | 26 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 9 (Low) | 1 (Low) | 13 (Low) | 99 (High) | 173 (Very high) | 54 (High) | 89 (High) | 1 (Low) | 84 (High) | 11 (Low) | 4 (Low) | 42 (Medium) | 12 | 7 |
| April | 24 (Low) | 1,303 (Very high) | 46 (Medium) | 79 (High) | 135 (Medium) | 33 (Medium) | 0 (Low) | 0 (Low) | 37 (Medium) | 0 (Low) | 4 (Low) | 9 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 1 (Low) | 1,341 (Very high) | 16 (Medium) | 70 (High) | 14 (Low) | 4 (Low) | 775 (Very high) | 21 (Medium) | 10 (Low) | 66 (High) | 18 | 15 |
| May | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| June | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| July | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| August | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| September | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| October | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| November | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 1 |
| December | 81 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 2 | 2 |