| 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 | 67 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| February | 1,030 (Very high) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 708 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| March | 593 (Very high) | 708 (Very high) | 9 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 323 (Very high) | 2 (Low) | 0 (Low) | 20 (Medium) | 1 (Low) | 223 (Very high) | 29 (Medium) | 1,683 (Very high) | 0 (Low) | 13 (Low) | 1 (Low) | 6 (Low) | 9 (Low) | 59 |
| April | 33 (Medium) | 8,353 (Very high) | 39 (Medium) | 27 (Medium) | 19 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 305 (Very high) | 8 (Low) | 475 (Very high) | 62 (High) | 4 (Low) | 409 (Very high) | 77 (High) | 8 (Low) | 25 (Medium) | 27 |
| May | 40 (Medium) | 85 (Medium) | 78 (Medium) | 40 (Medium) | 233 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 16 (Medium) | 1 (Low) | 0 (Low) | 60 (High) | 1 (Low) | 162 (Very high) | 18 (Medium) | 6 (Low) | 880 (Very high) | 203 (Very high) | 2 (Low) | 13 (Low) | 33 |
| June | 48 (Medium) | 2 (Low) | 37 (Medium) | 14 (Low) | 113 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 15 (Medium) | 1 (Low) | 0 (Low) | 38 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 71 (High) | 44 (Medium) | 6 (Low) | 150 (Very high) | 32 (Medium) | 0 (Low) | 11 (Low) | 11 |
| July | 4 (Low) | 0 (Low) | 22 (Low) | 6 (Low) | 9 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 47 (Medium) | 4 (Low) | 0 (Low) | 7 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 16 (Medium) | 24 (Medium) | 2 (Low) | 0 (Low) | 5 (Low) | 5 |
| August | 2 (Low) | 0 (Low) | 9 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 26 (Medium) | 15 (Medium) | 0 (Low) | 0 (Low) | 4 (Low) | 8 |
| September | 2 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 23 (Medium) | 18 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 7 |
| October | 17 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 7 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| November | 9 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 11 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 |