| 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 | 24 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| February | 94 (High) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 32 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 3 |
| March | 54 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 10 (Low) | 2 (Low) | 50 (High) | 0 (Low) | 11 (Low) | 2 (Low) | 1 (Low) | 4 (Low) | 9 |
| April | 12 (Low) | 820 (Very high) | 13 (Low) | 6 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 116 (Very high) | 2 (Low) | 15 (Medium) | 3 (Low) | 3 (Low) | 191 (Very high) | 3 (Low) | 7 (Low) | 13 (Low) | 20 |
| May | 6 (Low) | 8 (Low) | 21 (Low) | 6 (Low) | 215 (High) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 7 (Low) | 51 (High) | 5 (Low) | 393 (Very high) | 7 (Low) | 3 (Low) | 2 (Low) | 20 |
| June | 16 (Low) | 0 (Low) | 29 (Low) | 7 (Low) | 129 (Medium) | 1 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 2 (Low) | 10 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 50 (High) | 0 (Low) | 19 (Medium) | 88 (High) | 4 (Low) | 0 (Low) | 7 (Low) | 26 |
| July | 2 (Low) | 0 (Low) | 14 (Low) | 2 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 13 (Low) | 17 (Medium) | 2 (Low) | 0 (Low) | 4 (Low) | 26 |
| August | 2 (Low) | 0 (Low) | 5 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 30 (Medium) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 8 |
| September | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 6 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 21 (Medium) | 17 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 6 |
| October | 4 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |
| November | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (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) | 1 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 |
| December | 4 (Low) | 0 (Low) | 3 (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) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 |