| 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 | 361 (Very high) | 1 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 51 (High) | 0 (Low) | 18 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 1 | 5 |
| February | 774 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 194 (Very high) | 0 (Low) | 171 (Very high) | 5 (Low) | 16 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 3 | 9 |
| March | 650 (Very high) | 1,797 (Very high) | 7 (Low) | 9 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 44 (Medium) | 0 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 11 (Low) | 149 (Very high) | 37 (Medium) | 26 (Medium) | 367 (Very high) | 1 (Low) | 48 (Medium) | 3 (Low) | 9 (Low) | 41 (Medium) | 12 | 55 |
| April | 60 (Medium) | 1,235 (Very high) | 32 (Medium) | 62 (High) | 244 (High) | 17 (Medium) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 19 (Medium) | 187 (Very high) | 1 (Low) | 429 (Very high) | 46 (Medium) | 5 (Low) | 1,411 (Very high) | 12 (Low) | 11 (Low) | 40 (Medium) | 32 | 69 |
| May | 54 (Medium) | 18 (Low) | 57 (Medium) | 56 (High) | 658 (Very high) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 137 (Very high) | 2 (Low) | 4 (Low) | 518 (Very high) | 10 (Low) | 11 (Low) | 15 (Medium) | 24 | 54 |
| June | 26 (Low) | 4 (Low) | 29 (Low) | 141 (Very high) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 32 (Medium) | 0 (Low) | 4 (Low) | 14 (Low) | 10 (Low) | 0 (Low) | 14 (Low) | 9 | 9 |
| July | 5 (Low) | 1 (Low) | 60 (Medium) | 62 (High) | 3 (Low) | 0 (Low) | 34 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 20 (Medium) | 23 (Medium) | 3 (Low) | 0 (Low) | 9 (Low) | 9 | 14 |
| August | 9 (Low) | 0 (Low) | 8 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 14 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 7 | 8 |
| September | 18 (Low) | 19 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 18 (Medium) | 3 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 2 | 22 |
| October | 18 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 35 (Medium) | 0 (Low) | 0 (Low) | 6 (Low) | 2 | 15 |
| November | 2,308 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 56 (High) | 6 | 5 |
| December | 894 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 | 2 |