| 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 | 0 | 0 | 0 | 27 | 0 | 0 | 1 | 0 | 0 | 0 | 14 | 0 | 1 | 1 | 0 | 4 | 0 | 0 | 2 | 0 | 1 |
| February | 1 | 0 | 0 | 0 | 3 | 2 | 0 | 0 | 1 | 0 | 0 | 51 | 0 | 255 | 1 | 76 | 2 | 0 | 0 | 36 | 3 | 2 |
| March | 4 | 0 | 2 | 0 | 0 | 26 | 0 | 1 | 1 | 5 | 0 | 8 | 76 | 4 | 12 | 32 | 2 | 4 | 5 | 19 | 5 | 6 |
| April | 69 | 9 | 9 | 0 | 0 | 17 | 0 | 1 | 0 | 4 | 0 | 2 | 115 | 2 | 21 | 5 | 212 | 5 | 4 | 21 | 6 | 8 |
| May | 152 | 763 | 3 | 0 | 0 | 3 | 0 | 22 | 0 | 26 | 0 | 0 | 11 | 10 | 86 | 0 | 791 | 40 | 2 | 22 | 14 | 11 |
| June | 19 | 193 | 1 | 1 | 0 | 0 | 0 | 7 | 0 | 8 | 4 | 0 | 64 | 0 | 52 | 0 | 85 | 9 | 4 | 14 | 11 | 5 |
| July | 9 | 9 | 12 | 13 | 1 | 0 | 0 | 5 | 0 | 0 | 3 | 0 | 0 | 1 | 3 | 35 | 18 | 5 | 0 | 7 | 18 | 3 |
| August | 5 | 2 | 0 | 1 | 0 | 0 | 3 | 4 | 0 | 0 | 1 | 0 | 0 | 0 | 4 | 0 | 12 | 0 | 0 | 2 | 11 | 2 |
| September | 2 | 2 | 0 | 0 | 0 | 0 | 2 | 5 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 4 | 0 | 0 | 7 | 2 | 2 |
| October | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 5 | 0 | 0 | 5 | 1 | 2 |
| November | 0 | 1 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 3 | 0 | 0 | 4 | 0 | 1 |
| December | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 5 | 0 | 0 | 0 | 18 | 0 | 0 | 2 | 0 | 4 | 0 | 0 | 13 | 1 | 1 |