| 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 | 739 (Very high) | 1 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 39 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 65 (High) | 0 (Low) | 6 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 3 |
| February | 2,826 (Very high) | 0 (Low) | 9 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 83 (High) | 3 (Low) | 178 (Very high) | 4 (Low) | 147 (Very high) | 0 (Low) | 5 (Low) | 9 (Low) | 1 (Low) | 7 (Low) | 1 | 7 |
| March | 881 (Very high) | 2,906 (Very high) | 12 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 163 (Very high) | 0 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 59 (High) | 133 (Very high) | 10 (Low) | 38 (Medium) | 128 (Very high) | 2 (Low) | 11 (Low) | 16 (Medium) | 12 (Low) | 16 (Medium) | 10 | 18 |
| April | 33 (Medium) | 638 (Very high) | 15 (Low) | 14 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 147 (Very high) | 1 (Low) | 32 (Medium) | 11 (Low) | 1 (Low) | 274 (Very high) | 4 (Low) | 2 (Low) | 13 (Low) | 13 | 18 |
| May | 60 (Medium) | 18 (Low) | 176 (Very high) | 114 (Very high) | 71 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 251 (Very high) | 0 (Low) | 5 (Low) | 1,289 (Very high) | 32 (Medium) | 5 (Low) | 15 (Medium) | 11 | 54 |
| June | 50 (Medium) | 2 (Low) | 59 (Medium) | 23 (Medium) | 137 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 13 (Low) | 10 (Low) | 0 (Low) | 14 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 169 (Very high) | 0 (Low) | 11 (Low) | 536 (Very high) | 15 (Medium) | 1 (Low) | 14 (Low) | 17 | 57 |
| July | 12 (Low) | 1 (Low) | 15 (Low) | 7 (Low) | 10 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 15 (Medium) | 35 (Medium) | 4 (Low) | 0 (Low) | 3 (Low) | 16 | 26 |
| August | 4 (Low) | 2 (Low) | 7 (Low) | 7 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 16 (Medium) | 10 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 6 | 10 |
| September | 3 (Low) | 1 (Low) | 9 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 10 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 | 8 |
| October | 22 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 4 |
| November | 4 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 2 |
| December | 22 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 | 3 |