| 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 | 1,057 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 32 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 1 | 1 |
| February | 805 (Very high) | 2 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 95 (High) | 1 (Low) | 169 (Very high) | 1 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 9 (Low) | 1 | 2 |
| March | 461 (Very high) | 3,939 (Very high) | 12 (Low) | 15 (Low) | 11 (Low) | 2 (Low) | 9 (Low) | 1 (Low) | 103 (Very high) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 29 (Medium) | 81 (High) | 19 (Medium) | 49 (Medium) | 136 (Very high) | 1 (Low) | 110 (Very high) | 6 (Low) | 10 (Low) | 41 (Medium) | 11 | 14 |
| April | 77 (Medium) | 1,194 (Very high) | 43 (Medium) | 54 (High) | 42 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 826 (Very high) | 0 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 72 (High) | 4 (Low) | 53 (High) | 11 (Low) | 5 (Low) | 525 (Very high) | 17 (Medium) | 12 (Low) | 40 (Medium) | 12 | 38 |
| May | 29 (Low) | 13 (Low) | 135 (High) | 49 (Medium) | 485 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 2 (Low) | 14 (Low) | 0 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 33 (Medium) | 0 (Low) | 10 (Low) | 228 (Very high) | 14 (Low) | 3 (Low) | 10 (Low) | 11 | 12 |
| June | 9 (Low) | 3 (Low) | 46 (Medium) | 18 (Low) | 67 (Medium) | 1 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 21 (Medium) | 6 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 8 (Low) | 29 (Medium) | 5 (Low) | 1 (Low) | 6 (Low) | 39 | 5 |
| July | 2 (Low) | 2 (Low) | 6 (Low) | 5 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 11 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 68 | 3 |
| August | 1 (Low) | 1 (Low) | 4 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 26 (Medium) | 5 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 6 | 3 |
| September | 6 (Low) | 11 (Low) | 5 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 13 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 1 | 3 |
| October | 17 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 | 5 |
| November | 9 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 2 |
| December | 32 (Medium) | 0 (Low) | 1 (Low) | 0 (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) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 | 1 |