| 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 | 468 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 602 (Very high) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 0 |
| February | 503 (Very high) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 1,397 (Very high) | 0 (Low) | 32 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 | 3 |
| March | 404 (Very high) | 0 (Low) | 18 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 431 (Very high) | 0 (Low) | 3 (Low) | 2 (Low) | 18 (Medium) | 1 (Low) | 8 (Low) | 0 (Low) | 7 (Low) | 3 (Low) | 1 | 1 |
| April | 80 (Medium) | 309 (Very high) | 15 (Low) | 15 (Low) | 1 (Low) | 23 (Medium) | 0 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 30 (Medium) | 38 (Medium) | 158 (Very high) | 336 (Very high) | 2 (Low) | 314 (Very high) | 10 (Low) | 26 (Medium) | 20 (Medium) | 27 | 3 |
| May | 10 (Low) | 25 (Low) | 69 (Medium) | 104 (Very high) | 28 (Low) | 12 (Low) | 7 (Low) | 3 (Low) | 98 (High) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 156 (Very high) | 5 (Low) | 9 (Low) | 2,992 (Very high) | 58 (High) | 3 (Low) | 7 (Low) | 36 | 8 |
| June | 15 (Low) | 2 (Low) | 301 (Very high) | 120 (Very high) | 126 (Medium) | 2 (Low) | 31 (Medium) | 0 (Low) | 7 (Low) | 1 (Low) | 5 (Low) | 5 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 1 (Low) | 1,116 (Very high) | 0 (Low) | 5 (Low) | 398 (Very high) | 33 (Medium) | 2 (Low) | 7 (Low) | 40 | 2 |
| July | 4 (Low) | 2 (Low) | 169 (Very high) | 18 (Low) | 23 (Low) | 3 (Low) | 7 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 24 (Medium) | 7 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 71 (High) | 0 (Low) | 8 (Low) | 66 (High) | 7 (Low) | 0 (Low) | 13 (Low) | 38 | 3 |
| August | 2 (Low) | 1 (Low) | 10 (Low) | 6 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 17 (Medium) | 20 (Medium) | 2 (Low) | 0 (Low) | 2 (Low) | 4 | 1 |
| September | 1 (Low) | 0 (Low) | 19 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 15 (Medium) | 2 (Low) | 0 (Low) | 1 (Low) | 1 | 0 |
| October | 40 (Medium) | 0 (Low) | 225 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 3 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 | 1 |
| November | 40 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 | 3 |
| December | 474 (Very high) | 0 (Low) | 4 (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) | 29 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |