| 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 | 214 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| February | 245 (Very high) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 33 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 80 (High) | 0 (Low) | 198 (Very high) | 1 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 |
| March | 57 (Medium) | 509 (Very high) | 22 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 5 (Low) | 7 (Low) | 0 (Low) | 4 (Low) | 60 (High) | 11 (Low) | 3 (Low) | 25 (Medium) | 0 (Low) | 6 (Low) | 2 (Low) | 14 (Low) | 10 (Low) | 15 |
| April | 7 (Low) | 632 (Very high) | 18 (Low) | 46 (Medium) | 3 (Low) | 6 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 9 (Low) | 1 (Low) | 4 (Low) | 148 (Very high) | 0 (Low) | 15 (Medium) | 22 (Medium) | 1 (Low) | 467 (Very high) | 13 (Low) | 6 (Low) | 8 (Low) | 123 |
| May | 28 (Low) | 0 (Low) | 221 (Very high) | 93 (High) | 722 (Very high) | 0 (Low) | 51 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 10 (Low) | 529 (Very high) | 41 (Medium) | 0 (Low) | 17 (Medium) | 92 |
| June | 57 (Medium) | 0 (Low) | 148 (High) | 25 (Medium) | 142 (Medium) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 11 (Low) | 0 (Low) | 4 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 41 (Medium) | 0 (Low) | 11 (Low) | 48 (Medium) | 31 (Medium) | 0 (Low) | 12 (Low) | 42 |
| July | 1 (Low) | 0 (Low) | 35 (Medium) | 3 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 5 (Low) | 0 (Low) | 1 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 9 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 28 |
| August | 1 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 17 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 20 (Medium) | 5 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 10 |
| September | 2 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 21 (Medium) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| October | 26 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| November | 12 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (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) | 3 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 49 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 |