| 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 | 480 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 25 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 12 (Low) | 16 | 7 |
| February | 1,252 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 58 (High) | 0 (Low) | 158 (Very high) | 1 (Low) | 99 (High) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 10 (Low) | 4 | 1 |
| March | 128 (High) | 4,475 (Very high) | 4 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 17 (Medium) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 177 (Very high) | 9 (Low) | 59 (High) | 96 (High) | 2 (Low) | 50 (High) | 4 (Low) | 6 (Low) | 32 (Medium) | 13 | 3 |
| April | 15 (Low) | 854 (Very high) | 34 (Medium) | 113 (Very high) | 5 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 87 (High) | 5 (Low) | 167 (Very high) | 1 (Low) | 3 (Low) | 342 (Very high) | 17 (Medium) | 3 (Low) | 78 (High) | 23 | 3 |
| May | 7 (Low) | 120 (High) | 241 (Very high) | 131 (Very high) | 295 (High) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 15 (Medium) | 1 (Low) | 17 (Medium) | 2 (Low) | 0 (Low) | 137 (Very high) | 0 (Low) | 340 (Very high) | 0 (Low) | 4 (Low) | 741 (Very high) | 30 (Medium) | 4 (Low) | 12 (Low) | 43 | 18 |
| June | 7 (Low) | 1 (Low) | 55 (Medium) | 17 (Low) | 56 (Medium) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 9 (Low) | 0 (Low) | 19 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 245 (Very high) | 0 (Low) | 5 (Low) | 244 (Very high) | 11 (Low) | 0 (Low) | 8 (Low) | 9 | 2 |
| July | 3 (Low) | 1 (Low) | 37 (Medium) | 9 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 7 (Low) | 22 (Medium) | 1 (Low) | 0 (Low) | 12 (Low) | 27 | 2 |
| August | 1 (Low) | 1 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 10 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 4 | 1 |
| September | 2 (Low) | 3 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 | 2 |
| October | 46 (Medium) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 | 1 |
| November | 230 (Very high) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 | 1 |
| December | 969 (Very high) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 | 1 |