| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 223 (Very high) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 |
| February | 519 (Very high) | 0 (Low) | 26 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 42 (Medium) | 1 (Low) | 138 (Very high) | 1 (Low) | 227 (Very high) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 16 (Medium) | 1 |
| March | 47 (Medium) | 944 (Very high) | 18 (Low) | 2 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 52 (High) | 5 (Low) | 37 (Medium) | 32 (Medium) | 1 (Low) | 79 (High) | 11 (Low) | 8 (Low) | 29 (Medium) | 33 |
| April | 20 (Low) | 454 (Very high) | 16 (Low) | 17 (Low) | 5 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 87 (High) | 2 (Low) | 30 (Medium) | 1 (Low) | 3 (Low) | 456 (Very high) | 16 (Medium) | 3 (Low) | 17 (Medium) | 63 |
| May | 19 (Low) | 1 (Low) | 388 (Very high) | 26 (Medium) | 611 (Very high) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 5 (Low) | 123 (Very high) | 26 (Medium) | 0 (Low) | 6 (Low) | 33 |
| June | 10 (Low) | 0 (Low) | 216 (Very high) | 15 (Low) | 168 (Medium) | 3 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 12 (Low) | 0 (Low) | 3 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 85 (High) | 0 (Low) | 16 (Medium) | 35 (Medium) | 27 (Medium) | 0 (Low) | 8 (Low) | 23 |
| July | 1 (Low) | 3 (Low) | 17 (Low) | 5 (Low) | 3 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 12 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 53 |
| August | 3 (Low) | 0 (Low) | 8 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 12 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 70 |
| September | 1 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 15 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 3 |
| October | 20 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 |
| November | 189 (High) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 |
| December | 129 (High) | 0 (Low) | 1 (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) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 |