| 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 | 1,873 (Very high) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 55 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 63 (High) | 0 (Low) | 26 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 3 |
| February | 1,733 (Very high) | 0 (Low) | 26 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 32 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 31 (Medium) | 0 (Low) | 0 (Low) | 165 (Very high) | 0 (Low) | 188 (Very high) | 0 (Low) | 98 (High) | 0 (Low) | 1 (Low) | 24 (Medium) | 0 (Low) | 5 (Low) | 7 |
| March | 211 (Very high) | 214 (High) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 17 (Medium) | 1 (Low) | 661 (Very high) | 0 (Low) | 2 (Low) | 2 (Low) | 10 (Low) | 10 (Low) | 21 |
| April | 4 (Low) | 343 (Very high) | 4 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 5 (Low) | 1 (Low) | 5 (Low) | 3 (Low) | 1 (Low) | 253 (Very high) | 7 (Low) | 2 (Low) | 10 (Low) | 12 |
| May | 3 (Low) | 14 (Low) | 61 (Medium) | 5 (Low) | 17 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 2 (Low) | 273 (Very high) | 2 (Low) | 2 (Low) | 3 (Low) | 21 |
| June | 2 (Low) | 1 (Low) | 31 (Medium) | 3 (Low) | 24 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 16 (Medium) | 2 (Low) | 0 (Low) | 3 (Low) | 6 |
| July | 2 (Low) | 0 (Low) | 10 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 4 |
| August | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 |
| September | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 3 |
| October | 45 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 22 (Medium) | 0 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 6 |
| November | 299 (Very high) | 0 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 3 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 8 |
| December | 523 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 7 (Low) | 0 (Low) | 6 (Low) | 3 |