| 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 | 229 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 34 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 369 (Very high) | 0 (Low) | 16 (Medium) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 1 | 5 |
| February | 627 (Very high) | 1 (Low) | 35 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 11 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 254 (Very high) | 3 (Low) | 40 (Medium) | 9 (Low) | 43 (Medium) | 1 (Low) | 2 (Low) | 2 (Low) | 9 (Low) | 50 (High) | 7 | 4 |
| March | 19 (Low) | 3,114 (Very high) | 10 (Low) | 7 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 57 (High) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 45 (Medium) | 2 (Low) | 32 (Medium) | 169 (Very high) | 1 (Low) | 49 (Medium) | 2 (Low) | 10 (Low) | 72 (High) | 21 | 17 |
| April | 16 (Low) | 173 (High) | 23 (Low) | 83 (High) | 31 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 32 (Medium) | 1 (Low) | 30 (Medium) | 12 (Low) | 7 (Low) | 726 (Very high) | 23 (Medium) | 4 (Low) | 43 (Medium) | 30 | 7 |
| May | 64 (Medium) | 11 (Low) | 525 (Very high) | 287 (Very high) | 599 (Very high) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 15 (Medium) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 927 (Very high) | 0 (Low) | 11 (Low) | 1,123 (Very high) | 140 (Very high) | 2 (Low) | 31 (Medium) | 66 | 10 |
| June | 9 (Low) | 6 (Low) | 205 (Very high) | 29 (Medium) | 88 (Medium) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 33 (Medium) | 24 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 75 (High) | 0 (Low) | 6 (Low) | 22 (Medium) | 30 (Medium) | 1 (Low) | 21 (Medium) | 38 | 7 |
| July | 3 (Low) | 1 (Low) | 98 (High) | 10 (Low) | 6 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 11 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 8 (Low) | 6 (Low) | 7 (Low) | 0 (Low) | 14 (Low) | 17 | 6 |
| August | 2 (Low) | 1 (Low) | 6 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 14 | 7 |
| September | 50 (Medium) | 0 (Low) | 7 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 5 (Low) | 0 (Low) | 19 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 3 | 4 |
| October | 65 (Medium) | 2 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 2 | 5 |
| November | 389 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 1 | 6 |
| December | 1,655 (Very high) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 4 |