| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 1,010 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 | 3 |
| February | 460 (Very high) | 0 (Low) | 6 (Low) | 49 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 39 (Medium) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 40 (Medium) | 0 (Low) | 212 (Very high) | 1 (Low) | 24 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 62 (High) | 1 | 9 |
| March | 285 (Very high) | 2,093 (Very high) | 5 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 13 (Low) | 15 (Medium) | 44 (Medium) | 193 (Very high) | 0 (Low) | 82 (High) | 2 (Low) | 4 (Low) | 127 (Very high) | 9 | 10 |
| April | 16 (Low) | 5,479 (Very high) | 30 (Medium) | 44 (Medium) | 18 (Low) | 29 (Medium) | 0 (Low) | 0 (Low) | 73 (High) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 2 (Low) | 322 (Very high) | 1 (Low) | 117 (Very high) | 55 (High) | 8 (Low) | 681 (Very high) | 27 (Medium) | 8 (Low) | 105 (Very high) | 16 | 13 |
| May | 84 (Medium) | 35 (Medium) | 437 (Very high) | 83 (High) | 733 (Very high) | 4 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 137 (Very high) | 0 (Low) | 12 (Low) | 713 (Very high) | 46 (Medium) | 24 (Medium) | 21 (Medium) | 27 | 13 |
| June | 5 (Low) | 35 (Medium) | 405 (Very high) | 39 (Medium) | 1,155 (Very high) | 1 (Low) | 43 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 50 (High) | 0 (Low) | 4 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 197 (Very high) | 0 (Low) | 10 (Low) | 216 (Very high) | 14 (Low) | 13 (Low) | 10 (Low) | 37 | 16 |
| July | 2 (Low) | 18 (Low) | 31 (Medium) | 5 (Low) | 8 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 11 (Low) | 16 (Medium) | 1 (Low) | 1 (Low) | 8 (Low) | 16 | 8 |
| August | 2 (Low) | 1 (Low) | 12 (Low) | 6 (Low) | 9 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 18 (Medium) | 8 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 25 | 4 |
| September | 10 (Low) | 9 (Low) | 17 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 31 (Medium) | 13 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 | 5 |
| October | 4 (Low) | 8 (Low) | 9 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 10 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 6 | 6 |
| November | 19 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 2 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 | 4 |
| December | 12 (Low) | 4 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 | 3 |