| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 907 (Very high) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 69 (High) | 9 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 31 (Medium) | 0 (Low) | 109 (Very high) | 2 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 16 |
| February | 852 (Very high) | 0 (Low) | 27 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 60 (High) | 0 (Low) | 137 (Very high) | 1 (Low) | 89 (High) | 0 (Low) | 0 (Low) | 2 (Low) | 14 (Low) | 11 (Low) | 9 |
| March | 124 (High) | 104 (High) | 16 (Low) | 3 (Low) | 10 (Low) | 3 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 56 (High) | 287 (Very high) | 1 (Low) | 46 (Medium) | 1 (Low) | 31 (Medium) | 38 (Medium) | 6 |
| April | 45 (Medium) | 56 (Medium) | 13 (Low) | 7 (Low) | 9 (Low) | 35 (Medium) | 7 (Low) | 1 (Low) | 1 (Low) | 15 (Medium) | 3 (Low) | 1 (Low) | 16 (Medium) | 0 (Low) | 35 (Medium) | 2 (Low) | 169 (Very high) | 21 (Medium) | 3 (Low) | 442 (Very high) | 2 (Low) | 29 (Medium) | 24 (Medium) | 10 |
| May | 23 (Low) | 37 (Medium) | 89 (High) | 44 (Medium) | 261 (High) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 29 (Medium) | 7 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 137 (Very high) | 14 (Low) | 5 (Low) | 361 (Very high) | 30 (Medium) | 1 (Low) | 8 (Low) | 3 |
| June | 8 (Low) | 14 (Low) | 86 (High) | 16 (Low) | 80 (Medium) | 21 (Medium) | 4 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 5 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 53 (High) | 1 (Low) | 5 (Low) | 82 (High) | 10 (Low) | 1 (Low) | 10 (Low) | 6 |
| July | 8 (Low) | 3 (Low) | 22 (Low) | 22 (Medium) | 2 (Low) | 9 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 17 (Medium) | 3 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 35 (Medium) | 21 (Medium) | 2 (Low) | 4 (Low) | 8 (Low) | 14 |
| August | 4 (Low) | 1 (Low) | 9 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 32 (Medium) | 11 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 11 |
| September | 10 (Low) | 0 (Low) | 7 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 37 (Medium) | 14 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 8 |
| October | 28 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 5 |
| November | 43 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 |
| December | 281 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |