| 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 | 483 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 23 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| February | 294 (Very high) | 0 (Low) | 18 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 0 (Low) | 39 (Medium) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 2 |
| March | 425 (Very high) | 10 (Low) | 18 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 12 (Low) | 37 (Medium) | 451 (Very high) | 0 (Low) | 22 (Medium) | 6 (Low) | 11 (Low) | 14 (Low) | 3 |
| April | 9 (Low) | 224 (High) | 27 (Low) | 43 (Medium) | 5 (Low) | 4 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 1 (Low) | 19 (Medium) | 37 (Medium) | 5 (Low) | 273 (Very high) | 7 (Low) | 28 (Medium) | 33 (Medium) | 13 |
| May | 24 (Low) | 16 (Low) | 276 (Very high) | 75 (High) | 1,072 (Very high) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 8 (Low) | 1 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 124 (Very high) | 1 (Low) | 15 (Medium) | 282 (Very high) | 36 (Medium) | 1 (Low) | 11 (Low) | 55 |
| June | 15 (Low) | 10 (Low) | 304 (Very high) | 62 (High) | 1,087 (Very high) | 1 (Low) | 24 (Medium) | 0 (Low) | 1 (Low) | 22 (Medium) | 16 (Medium) | 1 (Low) | 10 (Low) | 25 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 95 (High) | 2 (Low) | 15 (Medium) | 149 (Very high) | 38 (Medium) | 0 (Low) | 22 (Medium) | 54 |
| July | 3 (Low) | 0 (Low) | 76 (Medium) | 8 (Low) | 14 (Low) | 1 (Low) | 33 (Medium) | 0 (Low) | 0 (Low) | 10 (Low) | 11 (Low) | 1 (Low) | 2 (Low) | 44 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 10 (Low) | 24 (Medium) | 5 (Low) | 0 (Low) | 15 (Medium) | 15 |
| August | 4 (Low) | 0 (Low) | 10 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 8 (Low) | 1 (Low) | 4 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 13 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 12 |
| September | 3 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 11 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 19 (Medium) | 5 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 4 |
| October | 28 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |
| November | 394 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 1 |
| December | 205 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 18 (Medium) | 1 |