| 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| February | 466 (Very high) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 193 (Very high) | 0 (Low) | 14 (Low) | 1 (Low) | 163 (Very high) | 0 (Low) | 1 (Low) | 12 (Low) | 0 (Low) | 8 (Low) | 4 |
| March | 381 (Very high) | 22 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 47 (Medium) | 0 (Low) | 17 (Medium) | 15 (Medium) | 4 (Low) | 7 (Low) | 8 |
| April | 6 (Low) | 8 (Low) | 5 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 12 (Low) | 3 (Low) | 6 (Low) | 84 (High) | 3 (Low) | 0 (Low) | 5 (Low) | 5 |
| May | 7 (Low) | 4 (Low) | 33 (Medium) | 21 (Medium) | 10 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 65 (High) | 0 (Low) | 1 (Low) | 336 (Very high) | 20 (Medium) | 0 (Low) | 23 (Medium) | 18 |
| June | 5 (Low) | 1 (Low) | 152 (Very high) | 20 (Medium) | 53 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 69 (High) | 0 (Low) | 2 (Low) | 139 (Very high) | 16 (Medium) | 0 (Low) | 5 (Low) | 46 |
| July | 8 (Low) | 1 (Low) | 37 (Medium) | 8 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 15 (Medium) | 3 (Low) | 32 (Medium) | 3 (Low) | 1 (Low) | 5 (Low) | 14 |
| August | 2 (Low) | 2 (Low) | 3 (Low) | 4 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 5 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 4 |
| September | 8 (Low) | 1 (Low) | 4 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 13 |
| October | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (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) | 12 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| December | 2 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 |