| 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 | 3,097 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 |
| February | 789 (Very high) | 0 (Low) | 24 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 90 (High) | 0 (Low) | 495 (Very high) | 5 (Low) | 179 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 18 |
| March | 246 (Very high) | 217 (High) | 22 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 11 (Low) | 16 (Medium) | 853 (Very high) | 0 (Low) | 206 (Very high) | 14 (Low) | 32 (Medium) | 15 (Medium) | 15 |
| April | 85 (Medium) | 169 (High) | 27 (Low) | 22 (Medium) | 6 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 56 (High) | 0 (Low) | 52 (High) | 19 (Medium) | 4 (Low) | 631 (Very high) | 14 (Low) | 8 (Low) | 10 (Low) | 18 |
| May | 61 (Medium) | 0 (Low) | 415 (Very high) | 65 (High) | 427 (Very high) | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 11 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 185 (Very high) | 0 (Low) | 12 (Low) | 238 (Very high) | 40 (Medium) | 0 (Low) | 21 (Medium) | 26 |
| June | 35 (Medium) | 0 (Low) | 360 (Very high) | 61 (High) | 319 (High) | 0 (Low) | 34 (Medium) | 0 (Low) | 0 (Low) | 18 (Medium) | 11 (Low) | 0 (Low) | 10 (Low) | 101 (Very high) | 0 (Low) | 16 (Medium) | 0 (Low) | 306 (Very high) | 0 (Low) | 9 (Low) | 81 (High) | 37 (Medium) | 0 (Low) | 6 (Low) | 17 |
| July | 8 (Low) | 0 (Low) | 14 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 50 (High) | 0 (Low) | 1 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 5 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 |
| September | 1 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |
| October | 16 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |
| November | 6 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (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) | 1 |
| December | 69 (Medium) | 0 (Low) | 2 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |