| 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 | 152 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |
| February | 683 (Very high) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 49 (Medium) | 1 (Low) | 212 (Very high) | 1 (Low) | 187 (Very high) | 0 (Low) | 4 (Low) | 2 (Low) | 5 (Low) | 12 (Low) | 14 |
| March | 147 (High) | 2,125 (Very high) | 19 (Low) | 4 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 412 (Very high) | 11 (Low) | 199 (Very high) | 131 (Very high) | 1 (Low) | 80 (High) | 1 (Low) | 35 (Medium) | 17 (Medium) | 75 |
| April | 37 (Medium) | 113 (High) | 8 (Low) | 10 (Low) | 48 (Low) | 4 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 24 (Medium) | 1 (Low) | 133 (Very high) | 4 (Low) | 3 (Low) | 364 (Very high) | 2 (Low) | 11 (Low) | 9 (Low) | 25 |
| May | 11 (Low) | 4 (Low) | 75 (Medium) | 47 (Medium) | 257 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 60 (High) | 7 (Low) | 6 (Low) | 205 (Very high) | 8 (Low) | 1 (Low) | 11 (Low) | 84 |
| June | 2 (Low) | 0 (Low) | 93 (High) | 25 (Medium) | 22 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 11 (Low) | 9 (Low) | 15 (Medium) | 4 (Low) | 11 (Low) | 27 |
| July | 1 (Low) | 0 (Low) | 23 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 12 (Low) | 18 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 47 (Medium) | 4 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 11 |
| September | 2 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 42 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 5 |
| October | 23 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 5 |
| November | 9 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 3 |
| December | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 |