| 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) | 16 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 196 (Very high) | 0 (Low) | 138 (Very high) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 | 1 |
| February | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 127 (Very high) | 0 (Low) | 221 (Very high) | 1 (Low) | 29 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 26 (Medium) | 1 | 3 |
| March | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 30 (Medium) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 29 (Medium) | 5 (Low) | 29 (Medium) | 38 (Medium) | 24 (Medium) | 0 (Low) | 3 (Low) | 22 (Medium) | 4 | 7 |
| April | 59 (High) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 83 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 166 (Very high) | 1 (Low) | 52 (High) | 17 (Medium) | 402 (Very high) | 18 (Medium) | 9 (Low) | 54 (High) | 10 | 20 |
| May | 118 (Very high) | 328 (High) | 9 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 28 (Medium) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 232 (Very high) | 1 (Low) | 571 (Very high) | 28 (Medium) | 21 (Medium) | 32 (Medium) | 44 | 24 |
| June | 26 (Medium) | 85 (Medium) | 0 (Low) | 8 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 49 (Medium) | 0 (Low) | 168 (Very high) | 12 (Low) | 2 (Low) | 5 (Low) | 16 | 6 |
| July | 4 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 23 (Medium) | 1 (Low) | 0 (Low) | 14 (Low) | 133 | 4 |
| August | 3 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 30 | 3 |
| September | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 6 | 2 |
| October | 1 (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) | 1 (Low) | 0 (Low) | 20 (Medium) | 1 (Low) | 0 (Low) | 2 (Low) | 1 | 3 |
| November | 1 (Low) | 1 (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) | 7 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 1 |
| December | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 | 1 |