| 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 | 274 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 194 (Very high) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 | 3 |
| February | 638 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 453 (Very high) | 0 (Low) | 51 (High) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 1 | 2 |
| March | 419 (Very high) | 1 (Low) | 18 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 15 (Medium) | 2 (Low) | 3 (Low) | 2 (Low) | 72 (High) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 14 (Low) | 5 | 3 |
| April | 44 (Medium) | 1,139 (Very high) | 19 (Low) | 83 (High) | 2 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 131 (Very high) | 1 (Low) | 50 (High) | 126 (Very high) | 3 (Low) | 1,198 (Very high) | 53 (High) | 11 (Low) | 37 (Medium) | 40 | 31 |
| May | 11 (Low) | 78 (Medium) | 151 (Very high) | 136 (Very high) | 62 (Medium) | 12 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 57 (High) | 19 (Medium) | 60 (High) | 2 (Low) | 3 (Low) | 5,054 (Very high) | 75 (High) | 5 (Low) | 9 (Low) | 42 | 28 |
| June | 28 (Low) | 12 (Low) | 307 (Very high) | 104 (Very high) | 348 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 38 (Medium) | 13 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 533 (Very high) | 0 (Low) | 7 (Low) | 147 (Very high) | 47 (Medium) | 3 (Low) | 27 (Medium) | 63 | 14 |
| July | 4 (Low) | 10 (Low) | 100 (High) | 12 (Low) | 18 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 26 (Medium) | 15 (Medium) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 40 (Medium) | 0 (Low) | 11 (Low) | 36 (Medium) | 6 (Low) | 0 (Low) | 23 (Medium) | 34 | 23 |
| August | 4 (Low) | 9 (Low) | 16 (Low) | 5 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 18 (Medium) | 14 (Low) | 3 (Low) | 0 (Low) | 12 (Low) | 15 | 13 |
| September | 8 (Low) | 2 (Low) | 9 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 14 (Low) | 14 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 6 | 9 |
| October | 83 (Medium) | 1 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 4 (Low) | 9 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 8 | 6 |
| November | 50 (Medium) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 | 4 |
| December | 148 (High) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 2 | 5 |