| 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 | 226 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 24 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 | 1 |
| February | 568 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 137 (Very high) | 0 (Low) | 71 (High) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 22 (Medium) | 0 | 1 |
| March | 338 (Very high) | 1 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 17 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 42 (Medium) | 1 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 21 (Medium) | 3 | 5 |
| April | 29 (Low) | 3,232 (Very high) | 23 (Low) | 126 (Very high) | 1 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 266 (Very high) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 213 (Very high) | 1 (Low) | 112 (Very high) | 28 (Medium) | 4 (Low) | 450 (Very high) | 30 (Medium) | 8 (Low) | 55 (High) | 19 | 15 |
| May | 13 (Low) | 280 (High) | 94 (High) | 180 (Very high) | 83 (Medium) | 11 (Low) | 0 (Low) | 0 (Low) | 721 (Very high) | 0 (Low) | 3 (Low) | 10 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 24 (Medium) | 16 (Medium) | 41 (Medium) | 1 (Low) | 4 (Low) | 611 (Very high) | 38 (Medium) | 3 (Low) | 58 (High) | 28 | 11 |
| June | 19 (Low) | 12 (Low) | 99 (High) | 81 (High) | 764 (Very high) | 3 (Low) | 1 (Low) | 0 (Low) | 40 (Medium) | 1 (Low) | 16 (Medium) | 17 (Medium) | 0 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 361 (Very high) | 0 (Low) | 10 (Low) | 118 (Very high) | 15 (Medium) | 1 (Low) | 22 (Medium) | 49 | 11 |
| July | 3 (Low) | 8 (Low) | 49 (Medium) | 23 (Medium) | 24 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 24 (Medium) | 16 (Medium) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 13 (Low) | 18 (Medium) | 4 (Low) | 0 (Low) | 15 (Medium) | 82 | 5 |
| August | 4 (Low) | 18 (Low) | 9 (Low) | 6 (Low) | 16 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 5 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 19 (Medium) | 13 (Low) | 1 (Low) | 0 (Low) | 12 (Low) | 19 | 4 |
| September | 8 (Low) | 4 (Low) | 2 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 17 (Medium) | 5 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 3 | 5 |
| October | 49 (Medium) | 6 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 | 3 |
| November | 45 (Medium) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 | 3 |
| December | 92 (High) | 1 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 | 2 |