| 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 | 121 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (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) | 3 |
| February | 81 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 |
| March | 723 (Very high) | 286 (High) | 6 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1,829 (Very high) | 12 (Low) | 123 (Very high) | 314 (Very high) | 3 (Low) | 18 (Medium) | 5 (Low) | 7 (Low) | 17 (Medium) | 36 |
| April | 15 (Low) | 327 (Very high) | 28 (Low) | 41 (Medium) | 13 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 1,993 (Very high) | 1 (Low) | 44 (Medium) | 11 (Low) | 1 (Low) | 531 (Very high) | 18 (Medium) | 14 (Low) | 39 (Medium) | 63 |
| May | 12 (Low) | 1 (Low) | 340 (Very high) | 61 (High) | 174 (Medium) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 112 (Very high) | 0 (Low) | 8 (Low) | 515 (Very high) | 67 (High) | 5 (Low) | 9 (Low) | 51 |
| June | 2 (Low) | 0 (Low) | 57 (Medium) | 9 (Low) | 187 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 7 (Low) | 24 (Medium) | 4 (Low) | 0 (Low) | 5 (Low) | 25 |
| July | 1 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 20 |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 |
| September | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 |
| October | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 |
| November | 12 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |
| December | 40 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 |