| 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 | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| February | 199 (High) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 74 (High) | 0 (Low) | 328 (Very high) | 1 (Low) | 391 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 10 (Low) | 10 |
| March | 191 (High) | 7,536 (Very high) | 9 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 176 (Very high) | 9 (Low) | 112 (Very high) | 237 (Very high) | 0 (Low) | 28 (Medium) | 1 (Low) | 6 (Low) | 15 (Medium) | 28 |
| April | 6 (Low) | 553 (Very high) | 8 (Low) | 23 (Medium) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 53 (High) | 2 (Low) | 35 (Medium) | 1 (Low) | 1 (Low) | 118 (Very high) | 6 (Low) | 4 (Low) | 16 (Medium) | 43 |
| May | 2 (Low) | 63 (Medium) | 174 (Very high) | 33 (Medium) | 26 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 77 (High) | 0 (Low) | 4 (Low) | 257 (Very high) | 40 (Medium) | 0 (Low) | 16 (Medium) | 28 |
| June | 2 (Low) | 0 (Low) | 143 (High) | 20 (Medium) | 192 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 8 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 56 (High) | 1 (Low) | 5 (Low) | 172 (Very high) | 6 (Low) | 0 (Low) | 14 (Low) | 25 |
| July | 5 (Low) | 0 (Low) | 20 (Low) | 7 (Low) | 4 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 7 (Low) | 16 (Medium) | 2 (Low) | 0 (Low) | 4 (Low) | 19 |
| August | 1 (Low) | 0 (Low) | 4 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 7 |
| September | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 15 (Medium) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 5 |
| October | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| November | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| December | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (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) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |