| 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 | 853 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 | 3 |
| February | 234 (Very high) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 43 (Medium) | 0 (Low) | 223 (Very high) | 2 (Low) | 31 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 49 (Medium) | 5 | 9 |
| March | 78 (Medium) | 230 (High) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 11 (Low) | 103 (Very high) | 35 (Medium) | 31 (Medium) | 108 (Very high) | 1 (Low) | 18 (Medium) | 1 (Low) | 2 (Low) | 51 (High) | 2 | 12 |
| April | 30 (Medium) | 1,630 (Very high) | 6 (Low) | 24 (Medium) | 4 (Low) | 16 (Medium) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 5 (Low) | 178 (Very high) | 2 (Low) | 33 (Medium) | 89 (High) | 2 (Low) | 226 (Very high) | 9 (Low) | 5 (Low) | 37 (Medium) | 8 | 33 |
| May | 15 (Low) | 69 (Medium) | 305 (Very high) | 69 (High) | 293 (High) | 3 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 2 (Low) | 15 (Medium) | 0 (Low) | 8 (Low) | 1 (Low) | 1 (Low) | 10 (Low) | 6 (Low) | 96 (High) | 0 (Low) | 12 (Low) | 502 (Very high) | 18 (Medium) | 5 (Low) | 10 (Low) | 17 | 26 |
| June | 10 (Low) | 3 (Low) | 290 (Very high) | 36 (Medium) | 355 (High) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 23 (Medium) | 0 (Low) | 5 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 315 (Very high) | 11 (Low) | 10 (Low) | 104 (Very high) | 17 (Medium) | 1 (Low) | 7 (Low) | 16 | 34 |
| July | 2 (Low) | 1 (Low) | 20 (Low) | 8 (Low) | 7 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 5 (Low) | 13 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 9 | 11 |
| August | 2 (Low) | 1 (Low) | 17 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 7 (Low) | 0 (Low) | 23 (Medium) | 14 (Low) | 8 (Low) | 1 (Low) | 11 (Low) | 35 | 46 |
| September | 2 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 13 (Low) | 16 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 8 | 12 |
| October | 7 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 46 (Medium) | 0 (Low) | 3 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 | 6 |
| November | 12 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 5 |
| December | 5 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |