| 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 | 73 (Medium) | 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) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| February | 86 (Medium) | 0 (Low) | 48 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 56 (High) | 0 (Low) | 0 (Low) | 4 (Low) | 8 (Low) | 7 (Low) | 9 |
| March | 22 (Low) | 666 (Very high) | 9 (Low) | 5 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 64 (High) | 4 (Low) | 24 (Medium) | 35 (Medium) | 1 (Low) | 64 (High) | 4 (Low) | 1 (Low) | 2 (Low) | 9 |
| April | 49 (Medium) | 24 (Low) | 20 (Low) | 69 (High) | 305 (High) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 5 (Low) | 22 (Medium) | 0 (Low) | 67 (High) | 1 (Low) | 3 (Low) | 442 (Very high) | 9 (Low) | 1 (Low) | 4 (Low) | 71 |
| May | 9 (Low) | 0 (Low) | 59 (Medium) | 64 (High) | 277 (High) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 5 (Low) | 164 (Very high) | 15 (Medium) | 0 (Low) | 9 (Low) | 66 |
| June | 2 (Low) | 0 (Low) | 58 (Medium) | 55 (High) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 9 (Low) | 14 (Low) | 0 (Low) | 11 (Low) | 13 |
| July | 1 (Low) | 0 (Low) | 12 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 20 (Medium) | 4 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 12 |
| August | 2 (Low) | 0 (Low) | 6 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 35 (Medium) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| September | 3 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 21 (Medium) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 |
| October | 8 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 10 |
| November | 14 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |