| 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 | 840 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 936 (Very high) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |
| February | 2,431 (Very high) | 0 (Low) | 5 (Low) | 3 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1,250 (Very high) | 7 (Low) | 38 (Medium) | 2 (Low) | 28 (Medium) | 0 (Low) | 15 (Medium) | 7 (Low) | 0 (Low) | 2 (Low) | 0 | 0 |
| March | 62 (Medium) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 1 (Low) | 2 (Low) | 32 (Medium) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 | 0 |
| April | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| May | 25 (Low) | 5 (Low) | 182 (Very high) | 121 (Very high) | 154 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 530 (Very high) | 1 (Low) | 2 (Low) | 3,801 (Very high) | 25 (Medium) | 0 (Low) | 7 (Low) | 17 | 0 |
| June | 3 (Low) | 1 (Low) | 31 (Medium) | 171 (Very high) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 21 (Medium) | 4 (Low) | 0 (Low) | 1 (Low) | 6 | 0 |
| July | 1 (Low) | 2 (Low) | 19 (Low) | 35 (Medium) | 3 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 5 (Low) | 28 (Medium) | 3 (Low) | 0 (Low) | 4 (Low) | 5 | 0 |
| August | 3 (Low) | 1 (Low) | 9 (Low) | 3 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 6 (Low) | 23 (Medium) | 1 (Low) | 0 (Low) | 2 (Low) | 4 | 0 |
| September | 3 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 0 |
| October | 105 (High) | 2 (Low) | 205 (Very high) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 1 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 | 0 |
| November | 31 (Medium) | 0 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 | 0 |
| December | 98 (High) | 0 (Low) | 4 (Low) | 1 (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) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |