| 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 | 34 (Medium) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 8 |
| February | 335 (Very high) | 0 (Low) | 36 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 27 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 57 (High) | 2 (Low) | 24 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 3 |
| March | 163 (High) | 512 (Very high) | 18 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 113 (Very high) | 604 (Very high) | 487 (Very high) | 1 (Low) | 28 (Medium) | 1 (Low) | 4 (Low) | 32 (Medium) | 51 |
| April | 15 (Low) | 660 (Very high) | 78 (Medium) | 40 (Medium) | 5 (Low) | 4 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 514 (Very high) | 6 (Low) | 404 (Very high) | 15 (Medium) | 5 (Low) | 215 (Very high) | 10 (Low) | 17 (Medium) | 37 (Medium) | 44 |
| May | 13 (Low) | 1 (Low) | 312 (Very high) | 56 (High) | 90 (Medium) | 1 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 4 (Low) | 11 (Low) | 0 (Low) | 190 (Very high) | 0 (Low) | 12 (Low) | 363 (Very high) | 54 (High) | 1 (Low) | 16 (Medium) | 111 |
| June | 2 (Low) | 0 (Low) | 222 (Very high) | 42 (Medium) | 147 (Medium) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 6 (Low) | 0 (Low) | 19 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 35 (Medium) | 0 (Low) | 19 (Medium) | 109 (Very high) | 15 (Medium) | 0 (Low) | 13 (Low) | 95 |
| July | 1 (Low) | 0 (Low) | 30 (Medium) | 2 (Low) | 6 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 9 (Low) | 18 (Medium) | 2 (Low) | 0 (Low) | 7 (Low) | 22 |
| August | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 27 (Medium) | 4 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 8 |
| September | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 23 (Medium) | 3 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 7 |
| October | 15 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (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) | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 |
| November | 527 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 |
| December | 53 (Medium) | 0 (Low) | 2 (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) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |