| 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 | 1,258 (Very high) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 40 (Medium) | 0 (Low) | 14 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 62 (High) | 0 (Low) | 25 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 2 |
| February | 313 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 239 (Very high) | 1 (Low) | 48 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 9 (Low) | 4 |
| March | 593 (Very high) | 190 (High) | 13 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 42 (Medium) | 742 (Very high) | 192 (Very high) | 0 (Low) | 12 (Low) | 2 (Low) | 6 (Low) | 24 (Medium) | 29 |
| April | 7 (Low) | 1,531 (Very high) | 12 (Low) | 22 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 84 (High) | 0 (Low) | 582 (Very high) | 46 (Medium) | 1 (Low) | 179 (Very high) | 9 (Low) | 10 (Low) | 17 (Medium) | 24 |
| May | 23 (Low) | 18 (Low) | 126 (High) | 29 (Medium) | 37 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 267 (Very high) | 0 (Low) | 5 (Low) | 183 (Very high) | 15 (Medium) | 2 (Low) | 13 (Low) | 21 |
| June | 31 (Medium) | 0 (Low) | 235 (Very high) | 44 (Medium) | 95 (Medium) | 0 (Low) | 11 (Low) | 0 (Low) | 2 (Low) | 19 (Medium) | 13 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 156 (Very high) | 0 (Low) | 8 (Low) | 346 (Very high) | 23 (Medium) | 0 (Low) | 13 (Low) | 24 |
| July | 6 (Low) | 0 (Low) | 35 (Medium) | 13 (Low) | 5 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 2 (Low) | 12 (Low) | 8 (Low) | 1 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 7 (Low) | 22 (Medium) | 4 (Low) | 0 (Low) | 4 (Low) | 15 |
| August | 4 (Low) | 0 (Low) | 5 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 18 (Medium) | 9 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 20 |
| September | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 |
| October | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (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) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |