| Month | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 241 (Very high) | 0 (Low) | 232 (Very high) | 1 (Low) | 9 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 1 | 4 |
| February | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 36 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 143 (Very high) | 0 (Low) | 217 (Very high) | 3 (Low) | 46 (Medium) | 1 (Low) | 2 (Low) | 1 (Low) | 13 (Low) | 6 | 21 |
| March | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 234 (Very high) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 40 (Medium) | 9 (Low) | 13 (Low) | 143 (Very high) | 32 (Medium) | 2 (Low) | 10 (Low) | 15 (Medium) | 6 | 21 |
| April | 41 (Medium) | 5 (Low) | 19 (Medium) | 0 (Low) | 1 (Low) | 27 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 124 (Very high) | 0 (Low) | 75 (High) | 43 (Medium) | 299 (Very high) | 8 (Low) | 13 (Low) | 67 (High) | 22 | 50 |
| May | 127 (Very high) | 389 (High) | 13 (Low) | 0 (Low) | 0 (Low) | 970 (Very high) | 0 (Low) | 17 (Medium) | 0 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 281 (Very high) | 4 (Low) | 2,643 (Very high) | 50 (High) | 38 (Medium) | 36 (Medium) | 59 | 62 |
| June | 35 (Medium) | 82 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 3 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 100 (Very high) | 0 (Low) | 198 (Very high) | 8 (Low) | 1 (Low) | 5 (Low) | 28 | 28 |
| July | 10 (Low) | 8 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 31 (Medium) | 2 (Low) | 0 (Low) | 7 (Low) | 13 | 15 |
| August | 4 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 30 (Medium) | 1 (Low) | 2 (Low) | 5 (Low) | 17 | 14 |
| September | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 9 | 13 |
| October | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 21 (Medium) | 5 (Low) | 0 (Low) | 4 (Low) | 3 | 9 |
| November | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 4 | 11 |
| December | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 | 6 |