| 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 | 667 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 59 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 121 (Very high) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 42 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |
| February | 282 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 52 (High) | 0 (Low) | 139 (Very high) | 2 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 | 1 |
| March | 1,467 (Very high) | 2,452 (Very high) | 22 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 14 (Low) | 115 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 6 (Low) | 2 (Low) | 49 (Medium) | 1 (Low) | 133 (Very high) | 20 (Medium) | 247 (Very high) | 1 (Low) | 11 (Low) | 2 (Low) | 11 (Low) | 16 (Medium) | 9 | 11 |
| April | 30 (Medium) | 3,105 (Very high) | 30 (Medium) | 110 (Very high) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 33 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 40 (Medium) | 120 (Very high) | 6 (Low) | 71 (High) | 215 (Very high) | 1 (Low) | 1,617 (Very high) | 26 (Medium) | 25 (Medium) | 36 (Medium) | 11 | 14 |
| May | 83 (Medium) | 12 (Low) | 232 (Very high) | 134 (Very high) | 453 (Very high) | 1 (Low) | 3 (Low) | 0 (Low) | 42 (Medium) | 0 (Low) | 1 (Low) | 14 (Low) | 0 (Low) | 18 (Medium) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 447 (Very high) | 3 (Low) | 10 (Low) | 1,034 (Very high) | 36 (Medium) | 1 (Low) | 16 (Medium) | 27 | 17 |
| June | 8 (Low) | 4 (Low) | 44 (Medium) | 16 (Low) | 131 (Medium) | 0 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 179 (Very high) | 1 (Low) | 7 (Low) | 172 (Very high) | 4 (Low) | 1 (Low) | 10 (Low) | 12 | 9 |
| July | 4 (Low) | 2 (Low) | 21 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 16 (Medium) | 15 (Medium) | 3 (Low) | 0 (Low) | 4 (Low) | 9 | 6 |
| August | 2 (Low) | 1 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 24 (Medium) | 7 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 3 | 4 |
| September | 2 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 8 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 | 2 |
| October | 35 (Medium) | 0 (Low) | 1 (Low) | 1 (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) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| November | 164 (High) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 | 2 |
| December | 242 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 2 |