| 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 | 1,180 (Very high) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 37 (Medium) | 0 (Low) | 30 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 |
| February | 1,174 (Very high) | 0 (Low) | 25 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 37 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 339 (Very high) | 0 (Low) | 265 (Very high) | 1 (Low) | 100 (Very high) | 0 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 13 (Low) | 2 |
| March | 416 (Very high) | 1,206 (Very high) | 36 (Medium) | 4 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 16 (Medium) | 96 (High) | 7 (Low) | 25 (Medium) | 263 (Very high) | 3 (Low) | 13 (Low) | 5 (Low) | 7 (Low) | 24 (Medium) | 27 |
| April | 11 (Low) | 919 (Very high) | 34 (Medium) | 33 (Medium) | 2 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 5 (Low) | 61 (High) | 1 (Low) | 33 (Medium) | 3 (Low) | 2 (Low) | 1,128 (Very high) | 16 (Medium) | 7 (Low) | 13 (Low) | 17 |
| May | 4 (Low) | 16 (Low) | 545 (Very high) | 32 (Medium) | 173 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 36 (Medium) | 4 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 1 (Low) | 7 (Low) | 1 (Low) | 70 (High) | 0 (Low) | 9 (Low) | 579 (Very high) | 25 (Medium) | 2 (Low) | 13 (Low) | 20 |
| June | 41 (Medium) | 2 (Low) | 185 (Very high) | 18 (Low) | 304 (High) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 31 (Medium) | 4 (Low) | 2 (Low) | 3 (Low) | 17 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 99 (High) | 0 (Low) | 12 (Low) | 101 (Very high) | 19 (Medium) | 0 (Low) | 10 (Low) | 10 |
| July | 1 (Low) | 1 (Low) | 46 (Medium) | 2 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 17 (Medium) | 2 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 8 (Low) | 16 (Medium) | 4 (Low) | 0 (Low) | 5 (Low) | 33 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 10 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 30 |
| September | 4 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 |
| October | 25 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| November | 305 (Very high) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (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) | 4 (Low) | 3 |
| December | 273 (Very high) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 |