| 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 | 228 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |
| February | 413 (Very high) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 87 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 40 (Medium) | 0 (Low) | 192 (Very high) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 | 2 |
| March | 530 (Very high) | 60 (Medium) | 16 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 48 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 59 (High) | 0 (Low) | 170 (Very high) | 7 (Low) | 446 (Very high) | 1 (Low) | 15 (Medium) | 2 (Low) | 1 (Low) | 17 (Medium) | 4 | 3 |
| April | 44 (Medium) | 4,673 (Very high) | 21 (Low) | 42 (Medium) | 0 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 560 (Very high) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 308 (Very high) | 2 (Low) | 96 (High) | 69 (High) | 14 (Low) | 448 (Very high) | 29 (Medium) | 9 (Low) | 15 (Medium) | 38 | 4 |
| May | 151 (High) | 343 (Very high) | 433 (Very high) | 61 (High) | 385 (High) | 7 (Low) | 0 (Low) | 0 (Low) | 401 (Very high) | 0 (Low) | 9 (Low) | 20 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 47 (Medium) | 10 (Low) | 61 (High) | 2 (Low) | 8 (Low) | 376 (Very high) | 54 (High) | 5 (Low) | 36 (Medium) | 60 | 5 |
| June | 51 (Medium) | 10 (Low) | 173 (Very high) | 27 (Medium) | 383 (High) | 0 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 15 (Medium) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 124 (Very high) | 0 (Low) | 5 (Low) | 160 (Very high) | 22 (Medium) | 0 (Low) | 12 (Low) | 31 | 8 |
| July | 3 (Low) | 6 (Low) | 30 (Medium) | 6 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 15 (Medium) | 8 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 5 (Low) | 5 (Low) | 2 (Low) | 1 (Low) | 7 (Low) | 59 | 3 |
| August | 1 (Low) | 3 (Low) | 5 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 7 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 38 | 3 |
| September | 8 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 | 1 |
| October | 31 (Medium) | 5 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 1 |
| November | 219 (Very high) | 5 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 1 |
| December | 203 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 0 |