| 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 | 690 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 | 1 |
| February | 267 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 53 (High) | 1 (Low) | 81 (High) | 4 (Low) | 209 (Very high) | 0 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 47 (Medium) | 0 | 1 |
| March | 140 (High) | 734 (Very high) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 2 (Low) | 4 (Low) | 80 (High) | 1 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 31 (Medium) | 0 | 0 |
| April | 10 (Low) | 2,226 (Very high) | 48 (Medium) | 36 (Medium) | 14 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 8 (Low) | 0 (Low) | 12 (Low) | 144 (Very high) | 2 (Low) | 68 (High) | 90 (High) | 4 (Low) | 1,160 (Very high) | 16 (Medium) | 7 (Low) | 40 (Medium) | 8 | 2 |
| May | 20 (Low) | 13 (Low) | 486 (Very high) | 76 (High) | 520 (Very high) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 15 (Medium) | 0 (Low) | 16 (Medium) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 154 (Very high) | 0 (Low) | 4 (Low) | 920 (Very high) | 88 (High) | 0 (Low) | 20 (Medium) | 4 | 1 |
| June | 12 (Low) | 1 (Low) | 496 (Very high) | 54 (High) | 978 (Very high) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 12 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 420 (Very high) | 2 (Low) | 18 (Medium) | 832 (Very high) | 22 (Medium) | 0 (Low) | 4 (Low) | 7 | 1 |
| July | 4 (Low) | 5 (Low) | 15 (Low) | 2 (Low) | 13 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 9 (Low) | 0 (Low) | 9 (Low) | 17 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 2 | 0 |
| August | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 8 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| September | 0 (Low) | 2 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| October | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| November | 1 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| December | 6 (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) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |