| 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 | 1,517 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 152 (Very high) | 0 (Low) | 62 (High) | 1 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 1 | 11 |
| February | 2,724 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 46 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 288 (Very high) | 0 (Low) | 353 (Very high) | 0 (Low) | 62 (High) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 14 (Low) | 4 | 17 |
| March | 514 (Very high) | 5,888 (Very high) | 151 (Very high) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 242 (Very high) | 15 (Medium) | 23 (Medium) | 242 (Very high) | 0 (Low) | 101 (Very high) | 2 (Low) | 3 (Low) | 53 (High) | 17 | 96 |
| April | 41 (Medium) | 1,288 (Very high) | 30 (Medium) | 202 (Very high) | 11 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 11 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 16 (Medium) | 143 (Very high) | 0 (Low) | 177 (Very high) | 12 (Low) | 1 (Low) | 1,762 (Very high) | 20 (Medium) | 20 (Medium) | 30 (Medium) | 36 | 74 |
| May | 82 (Medium) | 16 (Low) | 224 (Very high) | 281 (Very high) | 189 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 20 (Medium) | 0 (Low) | 27 (Medium) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 798 (Very high) | 1 (Low) | 8 (Low) | 948 (Very high) | 68 (High) | 4 (Low) | 18 (Medium) | 61 | 73 |
| June | 22 (Low) | 7 (Low) | 92 (High) | 59 (High) | 117 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 24 (Medium) | 0 (Low) | 14 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 286 (Very high) | 1 (Low) | 8 (Low) | 334 (Very high) | 22 (Medium) | 3 (Low) | 11 (Low) | 35 | 29 |
| July | 7 (Low) | 5 (Low) | 69 (Medium) | 23 (Medium) | 5 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 10 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 17 (Medium) | 26 (Medium) | 3 (Low) | 0 (Low) | 8 (Low) | 12 | 16 |
| August | 6 (Low) | 4 (Low) | 9 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 18 (Medium) | 10 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 | 17 |
| September | 4 (Low) | 1 (Low) | 5 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 10 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 | 5 |
| October | 116 (High) | 3 (Low) | 3 (Low) | 3 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 | 7 |
| November | 612 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 | 9 |
| December | 1,683 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 | 7 |