| 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 | 915 (Very high) | 2 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 55 (High) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 | 2 |
| February | 467 (Very high) | 0 (Low) | 10 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 77 (High) | 0 (Low) | 46 (Medium) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 11 (Low) | 1 | 3 |
| March | 301 (Very high) | 5,845 (Very high) | 11 (Low) | 29 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 24 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 13 (Low) | 121 (Very high) | 24 (Medium) | 25 (Medium) | 46 (Medium) | 0 (Low) | 89 (High) | 8 (Low) | 23 (Medium) | 66 (High) | 6 | 16 |
| April | 30 (Medium) | 2,130 (Very high) | 46 (Medium) | 75 (High) | 413 (Very high) | 17 (Medium) | 0 (Low) | 1 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 59 (High) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 242 (Very high) | 0 (Low) | 59 (High) | 8 (Low) | 3 (Low) | 1,244 (Very high) | 8 (Low) | 29 (Medium) | 73 (High) | 14 | 21 |
| May | 19 (Low) | 50 (Medium) | 38 (Medium) | 42 (Medium) | 240 (High) | 5 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 65 (High) | 0 (Low) | 5 (Low) | 310 (Very high) | 5 (Low) | 4 (Low) | 5 (Low) | 12 | 15 |
| June | 6 (Low) | 25 (Low) | 51 (Medium) | 92 (High) | 4 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 6 (Low) | 0 (Low) | 1 (Low) | 36 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 13 (Low) | 48 (Medium) | 9 (Low) | 1 (Low) | 13 (Low) | 18 | 9 |
| July | 1 (Low) | 2 (Low) | 27 (Low) | 32 (Medium) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 16 (Medium) | 9 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 18 (Medium) | 13 (Low) | 3 (Low) | 3 (Low) | 9 (Low) | 83 | 4 |
| August | 1 (Low) | 2 (Low) | 6 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 14 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 20 | 2 |
| September | 11 (Low) | 569 (Very high) | 4 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 21 (Medium) | 3 (Low) | 0 (Low) | 2 (Low) | 5 (Low) | 8 | 3 |
| October | 37 (Medium) | 185 (High) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 18 (Medium) | 10 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 4 | 5 |
| November | 1,104 (Very high) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 | 2 |
| December | 460 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 | 4 |