| 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 | 402 (Very high) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 43 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 104 (Very high) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 | 1 |
| February | 571 (Very high) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 54 (High) | 1 (Low) | 218 (Very high) | 2 (Low) | 4 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 3 (Low) | 5 (Low) | 1 | 3 |
| March | 703 (Very high) | 9,240 (Very high) | 23 (Low) | 2 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 26 (Medium) | 16 (Medium) | 0 (Low) | 0 (Low) | 25 (Medium) | 4 (Low) | 2 (Low) | 0 (Low) | 66 (High) | 20 (Medium) | 122 (Very high) | 19 (Medium) | 1,891 (Very high) | 1 (Low) | 3 (Low) | 3 (Low) | 19 (Medium) | 33 (Medium) | 14 | 7 |
| April | 71 (Medium) | 8,880 (Very high) | 17 (Low) | 182 (Very high) | 5 (Low) | 8 (Low) | 1 (Low) | 1 (Low) | 35 (Medium) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 22 (Medium) | 162 (Very high) | 3 (Low) | 343 (Very high) | 475 (Very high) | 7 (Low) | 1,368 (Very high) | 29 (Medium) | 77 (High) | 43 (Medium) | 23 | 10 |
| May | 23 (Low) | 146 (High) | 467 (Very high) | 153 (Very high) | 678 (Very high) | 1 (Low) | 2 (Low) | 1 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 22 (Medium) | 2 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 699 (Very high) | 2 (Low) | 15 (Medium) | 1,975 (Very high) | 64 (High) | 3 (Low) | 13 (Low) | 41 | 16 |
| June | 6 (Low) | 12 (Low) | 44 (Medium) | 20 (Medium) | 177 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 6 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 334 (Very high) | 1 (Low) | 6 (Low) | 169 (Very high) | 10 (Low) | 0 (Low) | 13 (Low) | 26 | 9 |
| July | 7 (Low) | 5 (Low) | 17 (Low) | 8 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 1 (Low) | 12 (Low) | 22 (Medium) | 3 (Low) | 0 (Low) | 3 (Low) | 20 | 5 |
| August | 2 (Low) | 8 (Low) | 7 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 14 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 14 | 5 |
| September | 5 (Low) | 2 (Low) | 8 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 12 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 5 | 2 |
| October | 53 (Medium) | 2 (Low) | 2 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 | 2 |
| November | 330 (Very high) | 1 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 41 (Medium) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 15 | 4 |
| December | 399 (Very high) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 | 3 |