| 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 | 10 (Low) | 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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 |
| February | 178 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 24 (Medium) | 0 (Low) | 40 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 |
| March | 46 (Medium) | 35 (Medium) | 5 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 84 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 9 |
| April | 28 (Low) | 51 (Medium) | 27 (Low) | 51 (High) | 2 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 13 (Low) | 3 (Low) | 0 (Low) | 285 (Very high) | 11 (Low) | 5 (Low) | 14 (Low) | 21 |
| May | 25 (Low) | 4 (Low) | 286 (Very high) | 84 (High) | 463 (Very high) | 2 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 188 (Very high) | 58 (High) | 4 (Low) | 585 (Very high) | 38 (Medium) | 2 (Low) | 9 (Low) | 38 |
| June | 6 (Low) | 0 (Low) | 63 (Medium) | 20 (Medium) | 41 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 79 (High) | 0 (Low) | 3 (Low) | 34 (Medium) | 6 (Low) | 0 (Low) | 4 (Low) | 11 |
| July | 1 (Low) | 0 (Low) | 7 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 |
| August | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 |
| September | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |
| October | 8 (Low) | 1 (Low) | 1 (Low) | 1 (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) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 9 (Low) | 0 (Low) | 1 (Low) | 1 (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) | 1 (Low) | 2 |
| December | 2 (Low) | 0 (Low) | 2 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |