| 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 | 624 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 123 (Very high) | 0 (Low) | 15 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 1 | 2 |
| February | 1,539 (Very high) | 4 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 199 (Very high) | 0 (Low) | 145 (Very high) | 1 (Low) | 6 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 31 (Medium) | 10 | 3 |
| March | 104 (High) | 8,338 (Very high) | 19 (Low) | 8 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 35 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 16 (Medium) | 281 (Very high) | 5 (Low) | 66 (High) | 43 (Medium) | 1 (Low) | 82 (High) | 1 (Low) | 2 (Low) | 66 (High) | 12 | 10 |
| April | 29 (Low) | 2,648 (Very high) | 65 (Medium) | 164 (Very high) | 25 (Low) | 51 (High) | 0 (Low) | 0 (Low) | 12 (Low) | 3 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 197 (Very high) | 0 (Low) | 190 (Very high) | 3 (Low) | 1 (Low) | 646 (Very high) | 32 (Medium) | 14 (Low) | 86 (High) | 15 | 9 |
| May | 17 (Low) | 51 (Medium) | 313 (Very high) | 211 (Very high) | 651 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 27 (Medium) | 1 (Low) | 23 (Medium) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 271 (Very high) | 0 (Low) | 9 (Low) | 633 (Very high) | 50 (High) | 8 (Low) | 15 (Medium) | 48 | 16 |
| June | 14 (Low) | 36 (Medium) | 231 (Very high) | 53 (High) | 147 (Medium) | 0 (Low) | 26 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 18 (Medium) | 0 (Low) | 17 (Medium) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 307 (Very high) | 0 (Low) | 9 (Low) | 327 (Very high) | 14 (Low) | 1 (Low) | 11 (Low) | 21 | 8 |
| July | 6 (Low) | 5 (Low) | 66 (Medium) | 23 (Medium) | 9 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 40 (Medium) | 11 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 30 (Medium) | 38 (Medium) | 1 (Low) | 0 (Low) | 15 (Medium) | 69 | 2 |
| August | 2 (Low) | 11 (Low) | 9 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 33 (Medium) | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 30 (Medium) | 15 (Medium) | 1 (Low) | 0 (Low) | 4 (Low) | 36 | 3 |
| September | 2 (Low) | 2 (Low) | 5 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 13 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 | 1 |
| October | 78 (Medium) | 6 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 2 | 3 |
| November | 201 (Very high) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (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) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 28 (Medium) | 1 | 10 |
| December | 1,021 (Very high) | 5 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 40 (Medium) | 0 | 3 |