| 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) | 37 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 147 (Very high) | 0 (Low) | 372 (Very high) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 | 1 |
| February | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 201 (Very high) | 2 (Low) | 170 (Very high) | 1 (Low) | 0 (Low) | 5 (Low) | 20 (Medium) | 1 | 4 |
| March | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 19 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 849 (Very high) | 23 (Medium) | 78 (High) | 126 (Very high) | 4 (Low) | 1 (Low) | 3 (Low) | 27 (Medium) | 4 | 4 |
| April | 28 (Medium) | 2 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 47 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2,088 (Very high) | 1 (Low) | 501 (Very high) | 32 (Medium) | 290 (Very high) | 2 (Low) | 6 (Low) | 30 (Medium) | 17 | 13 |
| May | 58 (High) | 284 (High) | 15 (Medium) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 170 (Very high) | 0 (Low) | 179 (Very high) | 0 (Low) | 1,009 (Very high) | 18 (Medium) | 6 (Low) | 84 (High) | 35 | 22 |
| June | 12 (Low) | 59 (Medium) | 0 (Low) | 8 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 70 (High) | 0 (Low) | 106 (Very high) | 4 (Low) | 1 (Low) | 16 (Medium) | 25 | 5 |
| July | 3 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 25 (Medium) | 1 (Low) | 0 (Low) | 10 (Low) | 3 | 2 |
| August | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 | 2 |
| September | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 2 | 2 |
| October | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 5 | 1 |
| November | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 2 | 1 |
| December | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 1 | 1 |