| 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 | 3,981 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 54 (High) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 19 (Medium) | 0 (Low) | 1 (Low) | 3 |
| February | 2,021 (Very high) | 0 (Low) | 26 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 988 (Very high) | 0 (Low) | 112 (Very high) | 1 (Low) | 98 (High) | 0 (Low) | 5 (Low) | 11 (Low) | 95 (High) | 6 (Low) | 10 |
| March | 1,699 (Very high) | 105 (High) | 40 (Medium) | 3 (Low) | 4 (Low) | 15 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 134 (Very high) | 0 (Low) | 21 (Medium) | 40 (Medium) | 466 (Very high) | 0 (Low) | 56 (High) | 38 (Medium) | 13 (Low) | 7 (Low) | 38 |
| April | 163 (High) | 132 (High) | 27 (Low) | 31 (Medium) | 2 (Low) | 36 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 24 (Medium) | 0 (Low) | 2 (Low) | 219 (Very high) | 0 (Low) | 87 (High) | 3 (Low) | 1 (Low) | 1,513 (Very high) | 22 (Medium) | 5 (Low) | 94 (High) | 53 |
| May | 7 (Low) | 25 (Low) | 339 (Very high) | 40 (Medium) | 117 (Medium) | 9 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 164 (Very high) | 0 (Low) | 8 (Low) | 2,433 (Very high) | 54 (High) | 4 (Low) | 31 (Medium) | 38 |
| June | 41 (Medium) | 1 (Low) | 169 (Very high) | 40 (Medium) | 89 (Medium) | 0 (Low) | 34 (Medium) | 0 (Low) | 0 (Low) | 5 (Low) | 20 (Medium) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 260 (Very high) | 0 (Low) | 8 (Low) | 307 (Very high) | 50 (High) | 0 (Low) | 8 (Low) | 36 |
| July | 2 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 3 (Low) | 19 (Medium) | 4 (Low) | 0 (Low) | 0 (Low) | 8 |
| August | 3 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 2 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 16 (Medium) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 10 |
| September | 24 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 36 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 6 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 5 |
| October | 28 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 33 (Medium) | 0 (Low) | 2 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 4 |
| November | 649 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (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) | 16 (Medium) | 0 (Low) | 1 (Low) | 11 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 7 |
| December | 162 (High) | 0 (Low) | 1 (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) | 2 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |