| 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 | 391 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 40 (Medium) | 0 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 1 |
| February | 1,011 (Very high) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 169 (Very high) | 0 (Low) | 153 (Very high) | 4 (Low) | 40 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 7 (Low) | 3 | 1 |
| March | 957 (Very high) | 2 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 13 (Low) | 0 (Low) | 9 (Low) | 3 (Low) | 506 (Very high) | 1 (Low) | 2 (Low) | 2 (Low) | 3 (Low) | 16 (Medium) | 8 | 1 |
| April | 119 (High) | 8,200 (Very high) | 14 (Low) | 64 (High) | 10 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 4 (Low) | 254 (Very high) | 2 (Low) | 146 (Very high) | 279 (Very high) | 3 (Low) | 1,126 (Very high) | 19 (Medium) | 25 (Medium) | 66 (High) | 29 | 3 |
| May | 12 (Low) | 128 (High) | 69 (Medium) | 114 (Very high) | 82 (Medium) | 10 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 45 (Medium) | 0 (Low) | 416 (Very high) | 1 (Low) | 2 (Low) | 2,995 (Very high) | 41 (Medium) | 7 (Low) | 15 (Medium) | 35 | 9 |
| June | 34 (Medium) | 15 (Low) | 128 (High) | 66 (High) | 481 (Very high) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 12 (Low) | 18 (Medium) | 0 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 614 (Very high) | 0 (Low) | 6 (Low) | 134 (Very high) | 18 (Medium) | 1 (Low) | 17 (Medium) | 34 | 7 |
| July | 4 (Low) | 24 (Low) | 55 (Medium) | 11 (Low) | 18 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 12 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 25 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 6 (Low) | 28 (Medium) | 5 (Low) | 0 (Low) | 9 (Low) | 17 | 6 |
| August | 9 (Low) | 10 (Low) | 10 (Low) | 5 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 11 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 27 | 5 |
| September | 7 (Low) | 6 (Low) | 3 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 9 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 7 | 3 |
| October | 99 (High) | 4 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 3 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 3 |
| November | 38 (Medium) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 | 1 |
| December | 71 (Medium) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 | 2 |