| 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 | 67 (Medium) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 123 (Very high) | 0 (Low) | 11 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 1 | 1 |
| February | 280 (Very high) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 39 (Medium) | 0 (Low) | 39 (Medium) | 1 (Low) | 15 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 27 (Medium) | 3 | 3 |
| March | 27 (Low) | 3,141 (Very high) | 8 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 24 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 196 (Very high) | 5 (Low) | 14 (Low) | 94 (High) | 0 (Low) | 65 (High) | 1 (Low) | 11 (Low) | 39 (Medium) | 7 | 6 |
| April | 2 (Low) | 1 (Low) | 7 (Low) | 52 (High) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 32 (Medium) | 6 (Low) | 0 (Low) | 2 (Low) | 15 | 5 |
| May | 14 (Low) | 2 (Low) | 300 (Very high) | 176 (Very high) | 869 (Very high) | 1 (Low) | 1 (Low) | 1 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 218 (Very high) | 0 (Low) | 14 (Low) | 387 (Very high) | 52 (High) | 0 (Low) | 19 (Medium) | 54 | 9 |
| June | 3 (Low) | 1 (Low) | 165 (Very high) | 45 (Medium) | 50 (Medium) | 1 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 16 (Medium) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 8 (Low) | 32 (Medium) | 9 (Low) | 0 (Low) | 17 (Medium) | 32 | 5 |
| July | 7 (Low) | 6 (Low) | 48 (Medium) | 8 (Low) | 16 (Low) | 1 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 14 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 9 (Low) | 23 (Medium) | 5 (Low) | 0 (Low) | 6 (Low) | 13 | 4 |
| August | 2 (Low) | 8 (Low) | 10 (Low) | 5 (Low) | 4 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 5 (Low) | 16 (Medium) | 15 (Medium) | 2 (Low) | 0 (Low) | 3 (Low) | 11 | 3 |
| September | 5 (Low) | 4 (Low) | 7 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 25 (Medium) | 5 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 4 | 2 |
| October | 4 (Low) | 5 (Low) | 4 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 2 |
| November | 302 (Very high) | 1 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 | 1 |
| December | 530 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 | 3 |