| 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 | 185 (High) | 0 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 43 (Medium) | 0 (Low) | 15 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 4 |
| February | 379 (Very high) | 0 (Low) | 45 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 138 (Very high) | 1 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 6 |
| March | 116 (High) | 147 (High) | 13 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 45 (Medium) | 22 (Medium) | 30 (Medium) | 334 (Very high) | 2 (Low) | 55 (High) | 2 (Low) | 5 (Low) | 48 (Medium) | 26 |
| April | 10 (Low) | 369 (Very high) | 38 (Medium) | 64 (High) | 4 (Low) | 4 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 959 (Very high) | 1 (Low) | 23 (Medium) | 24 (Medium) | 3 (Low) | 245 (Very high) | 9 (Low) | 45 (Medium) | 40 (Medium) | 79 |
| May | 21 (Low) | 11 (Low) | 381 (Very high) | 175 (Very high) | 165 (Medium) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 15 (Medium) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 35 (Medium) | 0 (Low) | 38 (Medium) | 0 (Low) | 14 (Low) | 335 (Very high) | 71 (High) | 3 (Low) | 14 (Low) | 231 |
| June | 13 (Low) | 0 (Low) | 308 (Very high) | 121 (Very high) | 459 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 20 (Medium) | 26 (Medium) | 0 (Low) | 7 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 65 (High) | 0 (Low) | 21 (Medium) | 105 (Very high) | 38 (Medium) | 2 (Low) | 15 (Medium) | 216 |
| July | 2 (Low) | 0 (Low) | 97 (High) | 9 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 24 (Medium) | 13 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 15 (Medium) | 3 (Low) | 3 (Low) | 0 (Low) | 9 (Low) | 92 |
| August | 3 (Low) | 0 (Low) | 12 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 29 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 20 |
| September | 9 (Low) | 0 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 17 |
| October | 51 (Medium) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 12 |
| November | 743 (Very high) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 |
| December | 115 (High) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (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) | 0 (Low) | 0 (Low) | 3 (Low) | 3 |