| 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 | 640 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 174 (Very high) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 10 (Low) | 1 | 2 |
| February | 761 (Very high) | 1 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 61 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 224 (Very high) | 0 (Low) | 68 (High) | 3 (Low) | 8 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 15 (Medium) | 3 | 2 |
| March | 495 (Very high) | 670 (Very high) | 12 (Low) | 6 (Low) | 1 (Low) | 11 (Low) | 0 (Low) | 3 (Low) | 27 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 6 (Low) | 1 (Low) | 7 (Low) | 2 (Low) | 23 (Medium) | 22 (Medium) | 774 (Very high) | 0 (Low) | 12 (Low) | 4 (Low) | 9 (Low) | 63 (High) | 12 | 1 |
| April | 17 (Low) | 5,044 (Very high) | 15 (Low) | 68 (High) | 4 (Low) | 27 (Medium) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 65 (High) | 4 (Low) | 91 (High) | 113 (Very high) | 3 (Low) | 396 (Very high) | 11 (Low) | 16 (Medium) | 37 (Medium) | 27 | 8 |
| May | 13 (Low) | 54 (Medium) | 283 (Very high) | 84 (High) | 267 (High) | 24 (Medium) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 9 (Low) | 3 (Low) | 1 (Low) | 54 (High) | 1 (Low) | 737 (Very high) | 10 (Low) | 8 (Low) | 1,978 (Very high) | 51 (High) | 5 (Low) | 12 (Low) | 30 | 5 |
| June | 24 (Low) | 19 (Low) | 325 (Very high) | 68 (High) | 209 (High) | 6 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 10 (Low) | 12 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 415 (Very high) | 1 (Low) | 7 (Low) | 667 (Very high) | 60 (High) | 0 (Low) | 23 (Medium) | 34 | 7 |
| July | 9 (Low) | 45 (Medium) | 144 (High) | 8 (Low) | 11 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 15 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 8 (Low) | 18 (Medium) | 4 (Low) | 0 (Low) | 8 (Low) | 14 | 6 |
| August | 2 (Low) | 2 (Low) | 9 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 9 | 2 |
| September | 2 (Low) | 4 (Low) | 3 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 10 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 | 2 |
| October | 50 (Medium) | 3 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 | 1 |
| November | 19 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| December | 31 (Medium) | 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) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |