| 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 | 60 (Medium) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 20 (Medium) | 0 (Low) | 16 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 |
| February | 162 (High) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 252 (Very high) | 1 (Low) | 20 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 3 |
| March | 307 (Very high) | 620 (Very high) | 11 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 28 (Medium) | 295 (Very high) | 474 (Very high) | 221 (Very high) | 1 (Low) | 19 (Medium) | 1 (Low) | 5 (Low) | 16 (Medium) | 22 |
| April | 15 (Low) | 741 (Very high) | 37 (Medium) | 37 (Medium) | 13 (Low) | 5 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 1 (Low) | 185 (Very high) | 1 (Low) | 41 (Medium) | 15 (Medium) | 2 (Low) | 600 (Very high) | 24 (Medium) | 6 (Low) | 29 (Medium) | 32 |
| May | 12 (Low) | 5 (Low) | 425 (Very high) | 77 (High) | 277 (High) | 1 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 37 (Medium) | 0 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 190 (Very high) | 0 (Low) | 13 (Low) | 322 (Very high) | 65 (High) | 0 (Low) | 20 (Medium) | 40 |
| June | 2 (Low) | 0 (Low) | 97 (High) | 22 (Medium) | 307 (High) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 5 (Low) | 39 (Medium) | 4 (Low) | 0 (Low) | 12 (Low) | 16 |
| July | 4 (Low) | 0 (Low) | 8 (Low) | 7 (Low) | 9 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 2 (Low) | 12 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 12 (Low) | 15 (Medium) | 4 (Low) | 0 (Low) | 8 (Low) | 10 |
| August | 1 (Low) | 0 (Low) | 4 (Low) | 13 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 13 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 4 |
| September | 4 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 11 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| October | 4 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| November | 15 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (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 |
| December | 293 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |