| 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 | 734 (Very high) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 28 (Medium) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 2 |
| February | 123 (High) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 48 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 | 2 |
| March | 222 (Very high) | 230 (High) | 16 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 30 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 2 (Low) | 35 (Medium) | 8 (Low) | 19 (Medium) | 4 (Low) | 149 (Very high) | 3 (Low) | 5 (Low) | 1 (Low) | 5 (Low) | 20 (Medium) | 5 | 6 |
| April | 31 (Medium) | 530 (Very high) | 15 (Low) | 54 (High) | 6 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 179 (Very high) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 24 (Medium) | 233 (Very high) | 3 (Low) | 49 (Medium) | 2 (Low) | 1 (Low) | 748 (Very high) | 13 (Low) | 6 (Low) | 19 (Medium) | 14 | 13 |
| May | 31 (Medium) | 20 (Low) | 287 (Very high) | 100 (Very high) | 220 (High) | 6 (Low) | 1 (Low) | 0 (Low) | 185 (Very high) | 0 (Low) | 1 (Low) | 11 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 82 (High) | 0 (Low) | 3 (Low) | 896 (Very high) | 23 (Medium) | 4 (Low) | 9 (Low) | 38 | 22 |
| June | 8 (Low) | 3 (Low) | 50 (Medium) | 21 (Medium) | 26 (Low) | 2 (Low) | 6 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 33 (Medium) | 12 (Low) | 0 (Low) | 6 (Low) | 16 (Medium) | 0 (Low) | 9 (Low) | 0 (Low) | 56 (High) | 0 (Low) | 5 (Low) | 53 (High) | 8 (Low) | 1 (Low) | 9 (Low) | 15 | 6 |
| July | 3 (Low) | 1 (Low) | 43 (Medium) | 9 (Low) | 2 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 4 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 7 (Low) | 18 (Medium) | 2 (Low) | 0 (Low) | 5 (Low) | 57 | 3 |
| August | 3 (Low) | 1 (Low) | 9 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 14 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 14 | 2 |
| September | 2 (Low) | 1 (Low) | 6 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 24 (Medium) | 14 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 8 | 3 |
| October | 6 (Low) | 2 (Low) | 6 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 7 | 2 |
| November | 38 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (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) | 4 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 | 1 |
| December | 261 (Very high) | 2 (Low) | 2 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 | 1 |