| 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 | 37 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 | 2 |
| February | 262 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 42 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 | 0 |
| March | 108 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 37 (Medium) | 1 (Low) | 12 (Low) | 1 (Low) | 28 (Medium) | 0 (Low) | 2 (Low) | 3 (Low) | 13 (Low) | 1 (Low) | 0 | 1 |
| April | 26 (Low) | 17 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 47 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 77 (High) | 2 (Low) | 3 (Low) | 3 (Low) | 1 (Low) | 9 (Low) | 12 (Low) | 2 (Low) | 4 (Low) | 3 | 4 |
| May | 15 (Low) | 5 (Low) | 97 (High) | 14 (Low) | 3 (Low) | 38 (Medium) | 22 (Medium) | 0 (Low) | 49 (Medium) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 50 (High) | 0 (Low) | 231 (Very high) | 0 (Low) | 1 (Low) | 98 (High) | 77 (High) | 18 (Medium) | 22 (Medium) | 14 | 2 |
| June | 43 (Medium) | 0 (Low) | 197 (Very high) | 28 (Medium) | 128 (Medium) | 1 (Low) | 19 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 210 (Very high) | 0 (Low) | 3 (Low) | 119 (Very high) | 43 (Medium) | 2 (Low) | 8 (Low) | 19 | 2 |
| July | 4 (Low) | 0 (Low) | 34 (Medium) | 9 (Low) | 3 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 6 (Low) | 15 (Medium) | 10 (Low) | 0 (Low) | 4 (Low) | 10 | 2 |
| August | 10 (Low) | 0 (Low) | 14 (Low) | 4 (Low) | 3 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 10 | 1 |
| September | 3 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| October | 38 (Medium) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 40 (Medium) | 0 (Low) | 3 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| November | 49 (Medium) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 53 (High) | 0 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 2 |
| December | 1,069 (Very high) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 | 1 |