| 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 | 445 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 852 (Very high) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 1 |
| February | 209 (Very high) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 298 (Very high) | 0 (Low) | 7 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 | 1 |
| March | 257 (Very high) | 2 (Low) | 14 (Low) | 1 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 432 (Very high) | 2 (Low) | 16 (Medium) | 7 (Low) | 104 (Very high) | 1 (Low) | 8 (Low) | 1 (Low) | 5 (Low) | 8 (Low) | 13 | 4 |
| April | 11 (Low) | 169 (High) | 13 (Low) | 25 (Medium) | 3 (Low) | 9 (Low) | 1 (Low) | 1 (Low) | 38 (Medium) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 24 (Medium) | 20 (Medium) | 83 (High) | 44 (Medium) | 6 (Low) | 582 (Very high) | 4 (Low) | 7 (Low) | 9 (Low) | 8 | 8 |
| May | 28 (Low) | 2 (Low) | 99 (High) | 68 (High) | 117 (Medium) | 2 (Low) | 18 (Medium) | 0 (Low) | 188 (Very high) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1,090 (Very high) | 0 (Low) | 2 (Low) | 2,103 (Very high) | 56 (High) | 2 (Low) | 5 (Low) | 28 | 2 |
| June | 13 (Low) | 1 (Low) | 77 (Medium) | 58 (High) | 101 (Medium) | 0 (Low) | 14 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 10 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 250 (Very high) | 0 (Low) | 3 (Low) | 160 (Very high) | 10 (Low) | 0 (Low) | 6 (Low) | 13 | 2 |
| July | 23 (Low) | 0 (Low) | 11 (Low) | 4 (Low) | 2 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 11 (Low) | 30 (Medium) | 2 (Low) | 0 (Low) | 3 (Low) | 2 | 1 |
| August | 2 (Low) | 0 (Low) | 16 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 16 (Medium) | 11 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 9 | 1 |
| September | 2 (Low) | 0 (Low) | 181 (Very high) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 7 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 | 2 |
| October | 33 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 | 1 |
| November | 186 (High) | 0 (Low) | 2 (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) | 3 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 1 |
| December | 440 (Very high) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 43 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 | 1 |