| 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 | 410 (Very high) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 76 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 175 (Very high) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 2 | 4 |
| February | 348 (Very high) | 1 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 565 (Very high) | 0 (Low) | 12 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 11 (Low) | 2 | 5 |
| March | 114 (High) | 310 (Very high) | 9 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 27 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 7 (Low) | 110 (Very high) | 0 (Low) | 3 (Low) | 5 (Low) | 8 (Low) | 45 (Medium) | 19 | 10 |
| April | 7 (Low) | 1,181 (Very high) | 20 (Low) | 59 (High) | 1 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 6 (Low) | 14 (Low) | 0 (Low) | 28 (Medium) | 50 (High) | 3 (Low) | 198 (Very high) | 24 (Medium) | 28 (Medium) | 29 (Medium) | 29 | 11 |
| May | 15 (Low) | 14 (Low) | 357 (Very high) | 119 (Very high) | 175 (Medium) | 25 (Medium) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 17 (Medium) | 0 (Low) | 10 (Low) | 1 (Low) | 2 (Low) | 27 (Medium) | 0 (Low) | 74 (High) | 4 (Low) | 4 (Low) | 2,022 (Very high) | 63 (High) | 7 (Low) | 35 (Medium) | 28 | 21 |
| June | 66 (Medium) | 6 (Low) | 405 (Very high) | 77 (High) | 172 (Medium) | 14 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 16 (Medium) | 0 (Low) | 9 (Low) | 6 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 532 (Very high) | 0 (Low) | 5 (Low) | 539 (Very high) | 99 (High) | 2 (Low) | 28 (Medium) | 28 | 22 |
| July | 7 (Low) | 2 (Low) | 139 (High) | 7 (Low) | 21 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 5 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 7 (Low) | 28 (Medium) | 10 (Low) | 1 (Low) | 6 (Low) | 14 | 23 |
| August | 1 (Low) | 1 (Low) | 10 (Low) | 3 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 10 (Low) | 20 (Medium) | 2 (Low) | 0 (Low) | 62 (High) | 4 | 9 |
| September | 1 (Low) | 4 (Low) | 11 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 14 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 10 |
| October | 23 (Low) | 5 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 | 7 |
| November | 44 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 4 |
| December | 55 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 8 | 3 |