| Month | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 290 (Very high) | 0 (Low) | 244 (Very high) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 3 | 1 |
| February | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 125 (Very high) | 0 (Low) | 365 (Very high) | 9 (Low) | 24 (Medium) | 2 (Low) | 1 (Low) | 4 (Low) | 19 (Medium) | 2 | 1 |
| March | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 24 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 5 (Low) | 14 (Low) | 32 (Medium) | 364 (Very high) | 20 (Medium) | 2 (Low) | 6 (Low) | 16 (Medium) | 5 | 1 |
| April | 36 (Medium) | 5 (Low) | 29 (Medium) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 501 (Very high) | 2 (Low) | 128 (Very high) | 41 (Medium) | 638 (Very high) | 7 (Low) | 17 (Medium) | 26 (Medium) | 28 | 5 |
| May | 132 (Very high) | 411 (Very high) | 25 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 21 (Medium) | 0 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 49 (Medium) | 1 (Low) | 528 (Very high) | 5 (Low) | 2,146 (Very high) | 40 (Medium) | 4 (Low) | 24 (Medium) | 61 | 6 |
| June | 26 (Medium) | 113 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 133 (Very high) | 0 (Low) | 204 (Very high) | 9 (Low) | 0 (Low) | 8 (Low) | 27 | 5 |
| July | 6 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 42 (Medium) | 2 (Low) | 0 (Low) | 10 (Low) | 23 | 3 |
| August | 4 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 25 (Medium) | 1 (Low) | 0 (Low) | 4 (Low) | 38 | 3 |
| September | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 2 |
| October | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 | 2 |
| November | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 | 1 |
| December | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 | 5 |