| 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) | 1 (Low) | 0 (Low) | 0 (Low) | 32 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 1 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 | 4 |
| February | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 142 (Very high) | 0 (Low) | 131 (Very high) | 2 (Low) | 208 (Very high) | 12 (Low) | 4 (Low) | 1 (Low) | 7 (Low) | 0 | 13 |
| March | 3 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 86 (High) | 1 (Low) | 1 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 18 (Medium) | 182 (Very high) | 2 (Low) | 33 (Medium) | 118 (Very high) | 84 (High) | 4 (Low) | 9 (Low) | 45 (Medium) | 7 | 30 |
| April | 76 (High) | 6 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 5 (Low) | 138 (Very high) | 1 (Low) | 13 (Low) | 10 (Low) | 525 (Very high) | 5 (Low) | 6 (Low) | 12 (Low) | 7 | 46 |
| May | 115 (Very high) | 582 (Very high) | 1 (Low) | 1 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 29 (Medium) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 126 (Very high) | 0 (Low) | 1,280 (Very high) | 26 (Medium) | 3 (Low) | 10 (Low) | 18 | 49 |
| June | 29 (Medium) | 276 (High) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 118 (Very high) | 0 (Low) | 121 (Very high) | 13 (Low) | 3 (Low) | 9 (Low) | 15 | 22 |
| July | 16 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 13 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 11 | 12 |
| August | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 2 | 7 |
| September | 5 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 | 4 |
| October | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 9 | 5 |
| November | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 4 |
| December | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 | 2 |