| 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 | 834 (Very high) | 1 (Low) | 18 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 39 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 69 (High) | 1 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 3 |
| February | 249 (Very high) | 0 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 187 (Very high) | 1 (Low) | 18 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 3 |
| March | 210 (Very high) | 81 (Medium) | 9 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 7 (Low) | 7 (Low) | 132 (Very high) | 2 (Low) | 73 (High) | 1 (Low) | 3 (Low) | 7 (Low) | 26 |
| April | 3 (Low) | 509 (Very high) | 12 (Low) | 18 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 35 (Medium) | 6 (Low) | 8 (Low) | 20 (Medium) | 1 (Low) | 78 (High) | 8 (Low) | 10 (Low) | 10 (Low) | 12 |
| May | 16 (Low) | 18 (Low) | 118 (High) | 26 (Medium) | 31 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 43 (Medium) | 5 (Low) | 2 (Low) | 120 (Very high) | 19 (Medium) | 1 (Low) | 21 (Medium) | 5 |
| June | 37 (Medium) | 3 (Low) | 100 (High) | 26 (Medium) | 70 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 15 (Medium) | 9 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 53 (High) | 0 (Low) | 6 (Low) | 135 (Very high) | 14 (Low) | 0 (Low) | 10 (Low) | 8 |
| July | 1 (Low) | 4 (Low) | 35 (Medium) | 4 (Low) | 9 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 11 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 5 |
| August | 2 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 4 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 14 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 |
| September | 1 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 12 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 |
| October | 2 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 |
| November | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| December | 16 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 |