| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 2,349 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |
| February | 1,660 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 176 (Very high) | 0 (Low) | 157 (Very high) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |
| March | 2,770 (Very high) | 49 (Medium) | 19 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 11 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 3 (Low) | 1 (Low) | 220 (Very high) | 1 (Low) | 121 (Very high) | 6 (Low) | 593 (Very high) | 1 (Low) | 2 (Low) | 2 (Low) | 8 (Low) | 5 (Low) | 8 | 2 |
| April | 172 (High) | 308 (Very high) | 21 (Low) | 13 (Low) | 11 (Low) | 209 (Very high) | 0 (Low) | 0 (Low) | 107 (Very high) | 0 (Low) | 1 (Low) | 7 (Low) | 4 (Low) | 2 (Low) | 6 (Low) | 7 (Low) | 509 (Very high) | 1 (Low) | 162 (Very high) | 26 (Medium) | 2 (Low) | 642 (Very high) | 6 (Low) | 10 (Low) | 67 (High) | 18 | 5 |
| May | 31 (Medium) | 4 (Low) | 161 (Very high) | 51 (High) | 66 (Medium) | 12 (Low) | 1 (Low) | 0 (Low) | 137 (Very high) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 467 (Very high) | 1 (Low) | 5 (Low) | 2,863 (Very high) | 18 (Medium) | 3 (Low) | 52 (High) | 24 | 2 |
| June | 15 (Low) | 1 (Low) | 59 (Medium) | 18 (Low) | 77 (Medium) | 1 (Low) | 3 (Low) | 0 (Low) | 18 (Medium) | 1 (Low) | 23 (Medium) | 3 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 90 (High) | 0 (Low) | 2 (Low) | 125 (Very high) | 8 (Low) | 0 (Low) | 6 (Low) | 13 | 3 |
| July | 3 (Low) | 1 (Low) | 98 (High) | 3 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 22 (Medium) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 3 (Low) | 44 (Medium) | 3 (Low) | 0 (Low) | 4 (Low) | 7 | 1 |
| August | 3 (Low) | 0 (Low) | 10 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 4 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 4 | 1 |
| September | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 1 |
| October | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 38 (Medium) | 0 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 | 1 |
| November | 742 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| December | 163 (High) | 0 (Low) | 0 (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) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |