| 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 | 1,257 (Very high) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 45 (Medium) | 0 (Low) | 17 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 |
| February | 1,020 (Very high) | 0 (Low) | 21 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 177 (Very high) | 0 (Low) | 44 (Medium) | 1 (Low) | 121 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 5 (Low) | 4 |
| March | 108 (High) | 2,920 (Very high) | 16 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 57 (High) | 2 (Low) | 51 (High) | 423 (Very high) | 1 (Low) | 71 (High) | 2 (Low) | 12 (Low) | 7 (Low) | 43 |
| April | 113 (High) | 187 (High) | 23 (Low) | 39 (Medium) | 177 (Medium) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 1 (Low) | 55 (High) | 11 (Low) | 5 (Low) | 960 (Very high) | 12 (Low) | 0 (Low) | 8 (Low) | 104 |
| May | 13 (Low) | 1 (Low) | 111 (High) | 116 (Very high) | 356 (High) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 402 (Very high) | 0 (Low) | 12 (Low) | 340 (Very high) | 30 (Medium) | 0 (Low) | 13 (Low) | 113 |
| June | 3 (Low) | 1 (Low) | 110 (High) | 73 (High) | 40 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 8 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 17 (Medium) | 43 (Medium) | 0 (Low) | 10 (Low) | 26 |
| July | 1 (Low) | 0 (Low) | 36 (Medium) | 10 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 16 (Medium) | 1 (Low) | 9 (Low) | 0 (Low) | 12 (Low) | 26 |
| August | 1 (Low) | 0 (Low) | 7 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 50 (High) | 4 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 6 |
| September | 1 (Low) | 4 (Low) | 7 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 40 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 |
| October | 4 (Low) | 0 (Low) | 2 (Low) | 2 (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) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 |
| November | 8 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| December | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 5 |