| 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 | 263 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 29 (Medium) | 0 (Low) | 6 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 1 | 4 |
| February | 410 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 38 (Medium) | 0 (Low) | 594 (Very high) | 0 (Low) | 27 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 47 (Medium) | 2 | 8 |
| March | 327 (Very high) | 2,583 (Very high) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 38 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 39 (Medium) | 19 (Medium) | 46 (Medium) | 178 (Very high) | 2 (Low) | 7 (Low) | 5 (Low) | 5 (Low) | 49 (Medium) | 7 | 17 |
| April | 24 (Low) | 2,317 (Very high) | 26 (Low) | 69 (High) | 37 (Low) | 48 (Medium) | 0 (Low) | 0 (Low) | 708 (Very high) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 824 (Very high) | 1 (Low) | 118 (Very high) | 57 (High) | 7 (Low) | 497 (Very high) | 21 (Medium) | 5 (Low) | 50 (High) | 19 | 20 |
| May | 26 (Low) | 12 (Low) | 725 (Very high) | 56 (High) | 1,413 (Very high) | 9 (Low) | 3 (Low) | 0 (Low) | 93 (High) | 0 (Low) | 1 (Low) | 14 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 92 (High) | 1 (Low) | 73 (High) | 0 (Low) | 26 (Medium) | 706 (Very high) | 46 (Medium) | 0 (Low) | 5 (Low) | 38 | 24 |
| June | 4 (Low) | 0 (Low) | 292 (Very high) | 29 (Medium) | 1,585 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 25 (Medium) | 0 (Low) | 4 (Low) | 12 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 107 (Very high) | 0 (Low) | 16 (Medium) | 160 (Very high) | 24 (Medium) | 0 (Low) | 4 (Low) | 35 | 21 |
| July | 2 (Low) | 0 (Low) | 27 (Low) | 5 (Low) | 17 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 18 (Medium) | 19 (Medium) | 2 (Low) | 0 (Low) | 4 (Low) | 4 | 10 |
| August | 0 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 17 (Medium) | 24 (Medium) | 1 (Low) | 0 (Low) | 4 (Low) | 4 | 12 |
| September | 1 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 31 (Medium) | 9 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 9 | 10 |
| October | 5 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 6 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 8 | 8 |
| November | 23 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 4 |
| December | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 | 2 |