| 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 | 2,700 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 233 (Very high) | 0 (Low) | 80 (High) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 27 (Medium) | 0 (Low) | 0 (Low) | 1 |
| February | 128 (High) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 126 (Very high) | 0 (Low) | 34 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |
| March | 1,123 (Very high) | 56 (Medium) | 10 (Low) | 1 (Low) | 2 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 54 (High) | 0 (Low) | 81 (High) | 13 (Low) | 389 (Very high) | 1 (Low) | 45 (Medium) | 1 (Low) | 15 (Medium) | 3 (Low) | 7 |
| April | 23 (Low) | 85 (Medium) | 32 (Medium) | 5 (Low) | 4 (Low) | 20 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 20 (Medium) | 0 (Low) | 44 (Medium) | 4 (Low) | 2 (Low) | 320 (Very high) | 18 (Medium) | 11 (Low) | 10 (Low) | 10 |
| May | 27 (Low) | 3 (Low) | 136 (High) | 65 (High) | 45 (Low) | 12 (Low) | 45 (Medium) | 0 (Low) | 1 (Low) | 7 (Low) | 5 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 63 (High) | 0 (Low) | 562 (Very high) | 0 (Low) | 2 (Low) | 827 (Very high) | 97 (High) | 0 (Low) | 6 (Low) | 22 |
| June | 6 (Low) | 4 (Low) | 138 (High) | 16 (Low) | 46 (Low) | 3 (Low) | 68 (High) | 0 (Low) | 0 (Low) | 3 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 45 (Medium) | 0 (Low) | 2 (Low) | 42 (Medium) | 27 (Medium) | 0 (Low) | 0 (Low) | 23 |
| July | 1 (Low) | 1 (Low) | 14 (Low) | 7 (Low) | 3 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 3 (Low) | 18 (Medium) | 5 (Low) | 0 (Low) | 2 (Low) | 4 |
| August | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 10 |
| September | 1 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 |
| October | 38 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 3 (Low) | 22 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 10 |
| November | 24 (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) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 |
| December | 147 (High) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 |