| 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 | 284 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |
| February | 549 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 130 (Very high) | 0 (Low) | 247 (Very high) | 8 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 | 2 |
| March | 1,197 (Very high) | 0 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 131 (Very high) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 106 (Very high) | 8 (Low) | 252 (Very high) | 0 (Low) | 5 (Low) | 1 (Low) | 8 (Low) | 48 (Medium) | 2 | 5 |
| April | 167 (High) | 12,465 (Very high) | 23 (Low) | 70 (High) | 6 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 195 (Very high) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 6 (Low) | 143 (Very high) | 4 (Low) | 264 (Very high) | 63 (High) | 3 (Low) | 866 (Very high) | 14 (Low) | 9 (Low) | 64 (High) | 23 | 32 |
| May | 9 (Low) | 327 (Very high) | 57 (Medium) | 95 (High) | 114 (Medium) | 12 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 1 (Low) | 371 (Very high) | 0 (Low) | 4 (Low) | 1,323 (Very high) | 34 (Medium) | 8 (Low) | 15 (Medium) | 26 | 11 |
| June | 19 (Low) | 6 (Low) | 94 (High) | 39 (Medium) | 744 (Very high) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 14 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 439 (Very high) | 0 (Low) | 10 (Low) | 195 (Very high) | 13 (Low) | 0 (Low) | 44 (Medium) | 23 | 14 |
| July | 12 (Low) | 12 (Low) | 60 (Medium) | 8 (Low) | 24 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 16 (Medium) | 11 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 15 (Medium) | 12 (Low) | 57 (High) | 3 (Low) | 0 (Low) | 6 (Low) | 12 | 5 |
| August | 2 (Low) | 5 (Low) | 6 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 24 (Medium) | 8 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 4 | 2 |
| September | 2 (Low) | 2 (Low) | 5 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 18 (Medium) | 7 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 4 | 2 |
| October | 43 (Medium) | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 5 | 3 |
| November | 81 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 2 |
| December | 57 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 1 |