| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 467 (Very high) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 |
| February | 1,058 (Very high) | 1 (Low) | 19 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 128 (Very high) | 0 (Low) | 199 (Very high) | 1 (Low) | 243 (Very high) | 0 (Low) | 2 (Low) | 1 (Low) | 6 (Low) | 7 (Low) | 2 |
| March | 286 (Very high) | 2,043 (Very high) | 6 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 29 (Medium) | 5 (Low) | 80 (High) | 59 (High) | 0 (Low) | 28 (Medium) | 2 (Low) | 21 (Medium) | 13 (Low) | 29 |
| April | 14 (Low) | 771 (Very high) | 28 (Low) | 16 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 33 (Medium) | 1 (Low) | 30 (Medium) | 3 (Low) | 6 (Low) | 401 (Very high) | 15 (Medium) | 5 (Low) | 64 (High) | 34 |
| May | 4 (Low) | 9 (Low) | 490 (Very high) | 30 (Medium) | 123 (Medium) | 1 (Low) | 24 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 4 (Low) | 46 (Medium) | 0 (Low) | 6 (Low) | 546 (Very high) | 29 (Medium) | 4 (Low) | 12 (Low) | 63 |
| June | 8 (Low) | 1 (Low) | 179 (Very high) | 11 (Low) | 290 (High) | 0 (Low) | 30 (Medium) | 0 (Low) | 0 (Low) | 9 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 0 (Low) | 6 (Low) | 68 (High) | 18 (Medium) | 0 (Low) | 7 (Low) | 31 |
| July | 1 (Low) | 0 (Low) | 16 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 7 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 17 |
| August | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 22 |
| September | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| October | 9 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 |
| November | 36 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 |
| December | 53 (Medium) | 0 (Low) | 2 (Low) | 1 (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) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |