| 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 | 217 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 19 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 |
| February | 165 (High) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 1,049 (Very high) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 30 (Medium) | 1 (Low) | 1 (Low) | 7 |
| March | 222 (Very high) | 232 (High) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 8 (Low) | 63 (High) | 4 (Low) | 42 (Medium) | 1 (Low) | 15 (Medium) | 2 (Low) | 9 (Low) | 16 (Medium) | 76 |
| April | 4 (Low) | 3,201 (Very high) | 6 (Low) | 17 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 74 (High) | 8 (Low) | 14 (Low) | 7 (Low) | 1 (Low) | 103 (Very high) | 5 (Low) | 5 (Low) | 2 (Low) | 1,801 |
| May | 37 (Medium) | 5 (Low) | 93 (High) | 53 (High) | 431 (Very high) | 1 (Low) | 433 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 27 (Medium) | 0 (Low) | 10 (Low) | 84 (High) | 13 (Low) | 1 (Low) | 6 (Low) | 190 |
| June | 79 (Medium) | 0 (Low) | 125 (High) | 12 (Low) | 458 (Very high) | 0 (Low) | 131 (Very high) | 0 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 19 (Medium) | 44 (Medium) | 13 (Low) | 0 (Low) | 6 (Low) | 42 |
| July | 1 (Low) | 1 (Low) | 14 (Low) | 2 (Low) | 7 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 17 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 20 |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 32 (Medium) | 4 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 8 |
| September | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 25 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 6 |
| October | 16 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |
| November | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 3 |
| December | 35 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 3 |