| 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 | 163 (High) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |
| February | 159 (High) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 50 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 36 (Medium) | 0 (Low) | 92 (High) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 2 | 2 |
| March | 516 (Very high) | 12 (Low) | 71 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 35 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 45 (Medium) | 9 (Low) | 25 (Medium) | 3 (Low) | 119 (Very high) | 1 (Low) | 11 (Low) | 8 (Low) | 4 (Low) | 28 (Medium) | 11 | 4 |
| April | 10 (Low) | 3,678 (Very high) | 31 (Medium) | 56 (High) | 19 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 48 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 127 (Very high) | 2 (Low) | 219 (Very high) | 20 (Medium) | 3 (Low) | 653 (Very high) | 33 (Medium) | 4 (Low) | 92 (High) | 24 | 17 |
| May | 96 (High) | 65 (Medium) | 502 (Very high) | 73 (High) | 448 (Very high) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 19 (Medium) | 15 (Medium) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 18 (Medium) | 33 (Medium) | 106 (Very high) | 0 (Low) | 9 (Low) | 666 (Very high) | 38 (Medium) | 2 (Low) | 53 (High) | 88 | 22 |
| June | 67 (Medium) | 50 (Medium) | 188 (Very high) | 35 (Medium) | 529 (Very high) | 2 (Low) | 4 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 21 (Medium) | 0 (Low) | 8 (Low) | 101 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 206 (Very high) | 0 (Low) | 8 (Low) | 192 (Very high) | 35 (Medium) | 0 (Low) | 11 (Low) | 34 | 14 |
| July | 6 (Low) | 60 (Medium) | 22 (Low) | 11 (Low) | 9 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 36 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 15 (Medium) | 10 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 18 | 6 |
| August | 2 (Low) | 6 (Low) | 5 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 22 (Medium) | 2 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 35 | 4 |
| September | 2 (Low) | 3 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 31 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 2 |
| October | 26 (Low) | 25 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 | 2 |
| November | 45 (Medium) | 8 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 1 |
| December | 319 (Very high) | 0 (Low) | 1 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 2 |