| 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 | 698 (Very high) | 1 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 1 |
| February | 892 (Very high) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 44 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 69 (High) | 0 (Low) | 68 (High) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 1 |
| March | 304 (Very high) | 2 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 27 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 56 (High) | 2 (Low) | 34 (Medium) | 2 (Low) | 1,046 (Very high) | 1 (Low) | 8 (Low) | 1 (Low) | 7 (Low) | 15 (Medium) | 5 | 2 |
| April | 12 (Low) | 3,131 (Very high) | 10 (Low) | 21 (Medium) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 302 (Very high) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 59 (High) | 1 (Low) | 37 (Medium) | 50 (High) | 3 (Low) | 147 (Very high) | 14 (Low) | 33 (Medium) | 8 (Low) | 13 | 3 |
| May | 7 (Low) | 97 (Medium) | 333 (Very high) | 62 (High) | 184 (Medium) | 2 (Low) | 2 (Low) | 1 (Low) | 272 (Very high) | 1 (Low) | 7 (Low) | 14 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 19 (Medium) | 1 (Low) | 154 (Very high) | 2 (Low) | 4 (Low) | 180 (Very high) | 53 (High) | 8 (Low) | 16 (Medium) | 30 | 4 |
| June | 41 (Medium) | 18 (Low) | 189 (Very high) | 25 (Medium) | 163 (Medium) | 9 (Low) | 5 (Low) | 1 (Low) | 9 (Low) | 1 (Low) | 2 (Low) | 12 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 111 (Very high) | 0 (Low) | 3 (Low) | 189 (Very high) | 39 (Medium) | 3 (Low) | 10 (Low) | 36 | 5 |
| July | 2 (Low) | 8 (Low) | 27 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 6 (Low) | 6 (Low) | 3 (Low) | 1 (Low) | 5 (Low) | 8 | 2 |
| August | 4 (Low) | 13 (Low) | 7 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 17 (Medium) | 6 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 23 | 2 |
| September | 3 (Low) | 30 (Medium) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 22 (Medium) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 3 | 1 |
| October | 6 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| November | 122 (High) | 3 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 1 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| December | 339 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |