| 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 | 76 (Medium) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 |
| February | 487 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 125 (Very high) | 0 (Low) | 82 (High) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 9 |
| March | 173 (High) | 2,356 (Very high) | 16 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 159 (Very high) | 47 (Medium) | 211 (Very high) | 80 (High) | 0 (Low) | 68 (High) | 3 (Low) | 16 (Medium) | 26 (Medium) | 218 |
| April | 8 (Low) | 62 (Medium) | 23 (Low) | 41 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 46 (Medium) | 1 (Low) | 32 (Medium) | 1 (Low) | 1 (Low) | 208 (Very high) | 8 (Low) | 2 (Low) | 15 (Medium) | 36 |
| May | 2 (Low) | 1 (Low) | 148 (High) | 51 (High) | 55 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 154 (Very high) | 0 (Low) | 9 (Low) | 291 (Very high) | 39 (Medium) | 0 (Low) | 15 (Medium) | 83 |
| June | 2 (Low) | 0 (Low) | 195 (Very high) | 56 (High) | 113 (Medium) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 11 (Low) | 0 (Low) | 42 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 457 (Very high) | 0 (Low) | 11 (Low) | 204 (Very high) | 111 (Very high) | 0 (Low) | 17 (Medium) | 55 |
| July | 1 (Low) | 0 (Low) | 29 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 8 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 24 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 25 (Medium) | 6 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 10 |
| September | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 13 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 |
| October | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| November | 19 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 3 |
| December | 15 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |