| 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 | 374 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 11 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 |
| February | 787 (Very high) | 0 (Low) | 37 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 157 (Very high) | 0 (Low) | 116 (Very high) | 1 (Low) | 340 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 22 (Medium) | 18 |
| March | 128 (High) | 4,265 (Very high) | 17 (Low) | 8 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 179 (Very high) | 6 (Low) | 59 (High) | 292 (Very high) | 0 (Low) | 144 (Very high) | 2 (Low) | 18 (Medium) | 22 (Medium) | 53 |
| April | 76 (Medium) | 77 (Medium) | 19 (Low) | 39 (Medium) | 206 (High) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 11 (Low) | 10 (Low) | 0 (Low) | 21 (Medium) | 0 (Low) | 127 (Very high) | 2 (Low) | 6 (Low) | 1,303 (Very high) | 6 (Low) | 7 (Low) | 8 (Low) | 7 |
| May | 23 (Low) | 0 (Low) | 137 (High) | 119 (Very high) | 574 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 58 (High) | 0 (Low) | 3 (Low) | 373 (Very high) | 22 (Medium) | 0 (Low) | 11 (Low) | 6 |
| June | 2 (Low) | 1 (Low) | 143 (High) | 64 (High) | 23 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 9 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 19 (Medium) | 9 (Low) | 38 (Medium) | 0 (Low) | 15 (Medium) | 19 |
| July | 1 (Low) | 0 (Low) | 27 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 6 (Low) | 0 (Low) | 8 (Low) | 10 |
| August | 1 (Low) | 4 (Low) | 13 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 57 (High) | 1 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 3 |
| September | 1 (Low) | 2 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 35 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| October | 14 (Low) | 2 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| November | 15 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 |
| December | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 |