| 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 | 2,390 (Very high) | 1 (Low) | 6 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 55 (High) | 0 (Low) | 17 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 1 | 4 |
| February | 400 (Very high) | 2 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 77 (High) | 0 (Low) | 407 (Very high) | 1 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 5 (Low) | 1 | 2 |
| March | 756 (Very high) | 3,150 (Very high) | 6 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 31 (Medium) | 24 (Medium) | 246 (Very high) | 15 (Medium) | 276 (Very high) | 0 (Low) | 28 (Medium) | 2 (Low) | 4 (Low) | 15 (Medium) | 5 | 4 |
| April | 10 (Low) | 2,859 (Very high) | 13 (Low) | 46 (Medium) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 24 (Medium) | 372 (Very high) | 9 (Low) | 54 (High) | 12 (Low) | 1 (Low) | 919 (Very high) | 15 (Medium) | 4 (Low) | 26 (Medium) | 11 | 2 |
| May | 44 (Medium) | 10 (Low) | 461 (Very high) | 97 (High) | 252 (High) | 2 (Low) | 49 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 14 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 354 (Very high) | 1 (Low) | 4 (Low) | 2,375 (Very high) | 22 (Medium) | 0 (Low) | 18 (Medium) | 39 | 10 |
| June | 47 (Medium) | 8 (Low) | 93 (High) | 19 (Low) | 59 (Medium) | 0 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 17 (Medium) | 10 (Low) | 0 (Low) | 8 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 214 (Very high) | 0 (Low) | 14 (Low) | 105 (Very high) | 10 (Low) | 0 (Low) | 15 (Medium) | 29 | 3 |
| July | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| August | 3 (Low) | 5 (Low) | 9 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 5 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 13 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 101 | 5 |
| September | 2 (Low) | 2 (Low) | 5 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 18 (Medium) | 10 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 8 | 2 |
| October | 21 (Low) | 5 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 5 | 1 |
| November | 249 (Very high) | 2 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 3 | 2 |
| December | 312 (Very high) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 3 | 1 |