| 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 | 23 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| February | 56 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 |
| March | 28 (Low) | 7 (Low) | 4 (Low) | 1 (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) | 13 (Low) | 1 (Low) | 40 (Medium) | 0 (Low) | 1 (Low) | 2 (Low) | 2 (Low) | 3 (Low) | 5 |
| April | 8 (Low) | 156 (High) | 10 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 11 (Low) | 2 (Low) | 25 (Medium) | 1 (Low) | 9 (Low) | 6 (Low) | 7 |
| May | 11 (Low) | 31 (Medium) | 22 (Low) | 5 (Low) | 480 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 99 (High) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 174 (Very high) | 0 (Low) | 7 (Low) | 355 (Very high) | 23 (Medium) | 3 (Low) | 5 (Low) | 24 |
| June | 6 (Low) | 12 (Low) | 19 (Low) | 3 (Low) | 63 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 18 (Medium) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 61 (High) | 0 (Low) | 8 (Low) | 75 (High) | 6 (Low) | 0 (Low) | 8 (Low) | 9 |
| July | 3 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 12 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 14 (Low) | 2 (Low) | 1 (Low) | 7 (Low) | 42 |
| August | 1 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 3 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 8 |
| September | 2 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 5 |
| October | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| November | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 3 |
| December | 3 (Low) | 0 (Low) | 1 (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) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 |