| 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 | 2,275 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 32 (Medium) | 0 (Low) | 18 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 1 |
| February | 394 (Very high) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 53 (High) | 0 (Low) | 76 (High) | 2 (Low) | 82 (High) | 0 (Low) | 1 (Low) | 1 (Low) | 6 (Low) | 6 (Low) | 4 | 2 |
| March | 1,072 (Very high) | 514 (Very high) | 15 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 8 (Low) | 146 (Very high) | 0 (Low) | 0 (Low) | 1 (Low) | 18 (Medium) | 1 (Low) | 0 (Low) | 44 (Medium) | 7 (Low) | 27 (Medium) | 7 (Low) | 415 (Very high) | 1 (Low) | 8 (Low) | 2 (Low) | 10 (Low) | 18 (Medium) | 6 | 10 |
| April | 28 (Low) | 1,871 (Very high) | 26 (Low) | 41 (Medium) | 4 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 7 (Low) | 255 (Very high) | 3 (Low) | 184 (Very high) | 17 (Medium) | 11 (Low) | 1,706 (Very high) | 6 (Low) | 8 (Low) | 66 (High) | 17 | 18 |
| May | 63 (Medium) | 11 (Low) | 492 (Very high) | 86 (High) | 214 (High) | 2 (Low) | 20 (Medium) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 229 (Very high) | 0 (Low) | 3 (Low) | 1,685 (Very high) | 22 (Medium) | 8 (Low) | 9 (Low) | 23 | 15 |
| June | 36 (Medium) | 3 (Low) | 68 (Medium) | 33 (Medium) | 49 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 32 (Medium) | 4 (Low) | 2 (Low) | 3 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 183 (Very high) | 0 (Low) | 9 (Low) | 114 (Very high) | 11 (Low) | 1 (Low) | 10 (Low) | 7 | 8 |
| July | 5 (Low) | 5 (Low) | 61 (Medium) | 11 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 16 (Medium) | 5 (Low) | 1 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 11 (Low) | 0 (Low) | 11 (Low) | 20 (Medium) | 3 (Low) | 1 (Low) | 7 (Low) | 12 | 8 |
| August | 2 (Low) | 1 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 3 | 2 |
| September | 4 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 11 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 | 2 |
| October | 18 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (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) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 2 |
| November | 211 (Very high) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| December | 490 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 1 |