| 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 | 79 (Medium) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |
| February | 263 (Very high) | 0 (Low) | 37 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 114 (Very high) | 0 (Low) | 523 (Very high) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 |
| March | 663 (Very high) | 1,969 (Very high) | 29 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 25 (Medium) | 52 (High) | 357 (Very high) | 67 (High) | 550 (Very high) | 1 (Low) | 32 (Medium) | 2 (Low) | 6 (Low) | 58 (High) | 116 |
| April | 16 (Low) | 2,302 (Very high) | 27 (Low) | 36 (Medium) | 3 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 692 (Very high) | 1 (Low) | 307 (Very high) | 39 (Medium) | 4 (Low) | 186 (Very high) | 12 (Low) | 20 (Medium) | 23 (Medium) | 50 |
| May | 10 (Low) | 4 (Low) | 243 (Very high) | 59 (High) | 222 (High) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 11 (Low) | 0 (Low) | 33 (Medium) | 0 (Low) | 0 (Low) | 13 (Low) | 1 (Low) | 102 (Very high) | 1 (Low) | 6 (Low) | 494 (Very high) | 37 (Medium) | 3 (Low) | 18 (Medium) | 42 |
| June | 4 (Low) | 0 (Low) | 66 (Medium) | 14 (Low) | 115 (Medium) | 0 (Low) | 31 (Medium) | 0 (Low) | 0 (Low) | 4 (Low) | 5 (Low) | 0 (Low) | 16 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 61 (High) | 0 (Low) | 7 (Low) | 43 (Medium) | 2 (Low) | 0 (Low) | 13 (Low) | 15 |
| July | 2 (Low) | 0 (Low) | 6 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 1 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 13 (Low) | 16 (Medium) | 1 (Low) | 0 (Low) | 5 (Low) | 7 |
| August | 2 (Low) | 0 (Low) | 7 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 3 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 31 (Medium) | 15 (Medium) | 1 (Low) | 0 (Low) | 8 (Low) | 9 |
| September | 1 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 23 (Medium) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| October | 18 (Low) | 0 (Low) | 2 (Low) | 1 (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) | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 |
| November | 21 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 |
| December | 10 (Low) | 0 (Low) | 4 (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) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |