| 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) | 28 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 259 (Very high) | 0 (Low) | 170 (Very high) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 1 | 8 |
| February | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 71 (High) | 1 (Low) | 280 (Very high) | 1 (Low) | 23 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 17 (Medium) | 3 | 5 |
| March | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 22 (Medium) | 14 (Low) | 45 (Medium) | 64 (High) | 32 (Medium) | 1 (Low) | 3 (Low) | 18 (Medium) | 5 | 10 |
| April | 32 (Medium) | 1 (Low) | 12 (Low) | 1 (Low) | 1 (Low) | 67 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 596 (Very high) | 0 (Low) | 103 (Very high) | 27 (Medium) | 181 (Very high) | 3 (Low) | 39 (Medium) | 24 (Medium) | 12 | 49 |
| May | 105 (Very high) | 412 (Very high) | 19 (Medium) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 20 (Medium) | 9 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 49 (Medium) | 0 (Low) | 183 (Very high) | 1 (Low) | 886 (Very high) | 19 (Medium) | 5 (Low) | 18 (Medium) | 55 | 48 |
| June | 17 (Low) | 93 (Medium) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 58 (High) | 0 (Low) | 188 (Very high) | 4 (Low) | 0 (Low) | 7 (Low) | 29 | 27 |
| July | 3 (Low) | 9 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 21 (Medium) | 1 (Low) | 0 (Low) | 5 (Low) | 110 | 15 |
| August | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 24 (Medium) | 1 (Low) | 0 (Low) | 3 (Low) | 173 | 19 |
| September | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 8 | 7 |
| October | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 7 |
| 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) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 14 | 5 |
| December | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 | 4 |