| 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 | 171 (High) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 53 (High) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 1 |
| February | 252 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 65 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 40 (Medium) | 7 (Low) | 164 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 | 2 |
| March | 363 (Very high) | 61 (Medium) | 18 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 123 (Very high) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 32 (Medium) | 4 (Low) | 215 (Very high) | 4 (Low) | 1,277 (Very high) | 0 (Low) | 20 (Medium) | 1 (Low) | 2 (Low) | 9 (Low) | 2 | 3 |
| April | 10 (Low) | 16,595 (Very high) | 37 (Medium) | 46 (Medium) | 5 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 62 (High) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 882 (Very high) | 6 (Low) | 527 (Very high) | 57 (High) | 7 (Low) | 698 (Very high) | 22 (Medium) | 8 (Low) | 45 (Medium) | 22 | 10 |
| May | 60 (Medium) | 484 (Very high) | 277 (Very high) | 53 (High) | 290 (High) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 57 (High) | 0 (Low) | 259 (Very high) | 0 (Low) | 16 (Medium) | 818 (Very high) | 32 (Medium) | 10 (Low) | 23 (Medium) | 39 | 11 |
| June | 57 (Medium) | 0 (Low) | 139 (High) | 29 (Medium) | 161 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 18 (Medium) | 0 (Low) | 19 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 167 (Very high) | 0 (Low) | 9 (Low) | 75 (High) | 12 (Low) | 0 (Low) | 15 (Medium) | 25 | 13 |
| July | 4 (Low) | 0 (Low) | 26 (Low) | 13 (Low) | 6 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 16 (Medium) | 11 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 26 (Medium) | 25 (Medium) | 2 (Low) | 0 (Low) | 9 (Low) | 11 | 7 |
| August | 4 (Low) | 0 (Low) | 10 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 40 (Medium) | 12 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 3 | 8 |
| September | 2 (Low) | 1 (Low) | 11 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 42 (Medium) | 9 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 7 |
| October | 22 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 | 1 |
| November | 72 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 1 |
| December | 24 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 1 |