| 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 | 41 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 4 |
| February | 671 (Very high) | 1 (Low) | 25 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 24 (Medium) | 0 (Low) | 27 (Medium) | 1 (Low) | 9 (Low) | 3 (Low) | 1 (Low) | 14 (Low) | 9 |
| March | 506 (Very high) | 1,066 (Very high) | 17 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 5 (Low) | 23 (Medium) | 19 (Medium) | 55 (High) | 2 (Low) | 13 (Low) | 3 (Low) | 22 (Medium) | 60 (High) | 13 |
| April | 10 (Low) | 2,048 (Very high) | 21 (Low) | 31 (Medium) | 6 (Low) | 2 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 55 (High) | 1 (Low) | 10 (Low) | 7 (Low) | 5 (Low) | 249 (Very high) | 5 (Low) | 42 (Medium) | 450 (Very high) | 54 |
| May | 11 (Low) | 27 (Low) | 240 (Very high) | 72 (High) | 157 (Medium) | 1 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 11 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 35 (Medium) | 0 (Low) | 12 (Low) | 178 (Very high) | 44 (Medium) | 3 (Low) | 27 (Medium) | 101 |
| June | 12 (Low) | 0 (Low) | 212 (Very high) | 38 (Medium) | 288 (High) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 13 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 233 (Very high) | 0 (Low) | 30 (Medium) | 157 (Very high) | 61 (High) | 0 (Low) | 12 (Low) | 86 |
| July | 11 (Low) | 0 (Low) | 56 (Medium) | 10 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 24 (Medium) | 16 (Medium) | 2 (Low) | 0 (Low) | 6 (Low) | 24 |
| August | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| September | 5 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 16 (Medium) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 23 (Medium) | 4 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 4 |
| October | 68 (Medium) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 6 |
| November | 173 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 58 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| December | 140 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 2 |