| 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 | 887 (Very high) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 0 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 | 1 |
| February | 166 (High) | 0 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 39 (Medium) | 0 (Low) | 83 (High) | 0 (Low) | 2 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 | 1 |
| March | 403 (Very high) | 1,794 (Very high) | 7 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 136 (Very high) | 0 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 2 (Low) | 1 (Low) | 25 (Medium) | 19 (Medium) | 12 (Low) | 30 (Medium) | 71 (High) | 1 (Low) | 3 (Low) | 1 (Low) | 4 (Low) | 23 (Medium) | 7 | 18 |
| April | 12 (Low) | 2,164 (Very high) | 18 (Low) | 33 (Medium) | 23 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 237 (Very high) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 10 (Low) | 212 (Very high) | 2 (Low) | 26 (Medium) | 5 (Low) | 3 (Low) | 337 (Very high) | 12 (Low) | 5 (Low) | 68 (High) | 9 | 24 |
| May | 30 (Medium) | 21 (Low) | 409 (Very high) | 108 (Very high) | 335 (High) | 4 (Low) | 3 (Low) | 10 (Low) | 615 (Very high) | 0 (Low) | 1 (Low) | 16 (Medium) | 0 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 76 (High) | 0 (Low) | 5 (Low) | 577 (Very high) | 24 (Medium) | 3 (Low) | 22 (Medium) | 28 | 42 |
| June | 14 (Low) | 5 (Low) | 63 (Medium) | 19 (Low) | 42 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 45 (Medium) | 5 (Low) | 0 (Low) | 4 (Low) | 16 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 97 (High) | 0 (Low) | 6 (Low) | 46 (Medium) | 6 (Low) | 0 (Low) | 14 (Low) | 12 | 11 |
| July | 1 (Low) | 2 (Low) | 43 (Medium) | 5 (Low) | 2 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 22 (Medium) | 4 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 8 (Low) | 13 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 84 | 9 |
| August | 6 (Low) | 1 (Low) | 5 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 13 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 19 (Medium) | 7 (Low) | 8 (Low) | 0 (Low) | 4 (Low) | 28 | 3 |
| September | 1 (Low) | 1 (Low) | 6 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 | 2 |
| October | 8 (Low) | 7 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 | 1 |
| November | 66 (Medium) | 4 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 | 2 |
| December | 796 (Very high) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 | 1 |