| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 70 (Medium) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 5 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 |
| February | 167 (High) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 39 (Medium) | 0 (Low) | 131 (Very high) | 1 (Low) | 546 (Very high) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 6 (Low) | 29 |
| March | 25 (Low) | 1,124 (Very high) | 26 (Low) | 2 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 58 (High) | 55 (High) | 771 (Very high) | 204 (Very high) | 1 (Low) | 26 (Medium) | 2 (Low) | 16 (Medium) | 29 (Medium) | 115 |
| April | 9 (Low) | 133 (High) | 25 (Low) | 10 (Low) | 14 (Low) | 36 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 1 (Low) | 325 (Very high) | 2 (Low) | 129 (Very high) | 12 (Low) | 4 (Low) | 589 (Very high) | 3 (Low) | 23 (Medium) | 22 (Medium) | 35 |
| May | 5 (Low) | 3 (Low) | 41 (Medium) | 19 (Low) | 115 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 69 (High) | 1 (Low) | 6 (Low) | 229 (Very high) | 14 (Low) | 0 (Low) | 6 (Low) | 33 |
| June | 2 (Low) | 0 (Low) | 31 (Medium) | 5 (Low) | 100 (Medium) | 0 (Low) | 8 (Low) | 1 (Low) | 1 (Low) | 29 (Medium) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 25 (Medium) | 0 (Low) | 9 (Low) | 39 (Medium) | 6 (Low) | 0 (Low) | 6 (Low) | 17 |
| July | 1 (Low) | 0 (Low) | 6 (Low) | 5 (Low) | 5 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 15 (Medium) | 6 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 27 |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 40 (Medium) | 7 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 10 |
| September | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 35 (Medium) | 4 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 6 |
| October | 21 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| November | 13 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| December | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |