| 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 | 0 | 0 | 0 | 28 | 0 | 1 | 1 | 1 | 1 | 0 | 259 | 0 | 170 | 2 | 0 | 1 | 0 | 0 | 9 | 1 | 8 |
| February | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 1 | 1 | 1 | 0 | 71 | 1 | 280 | 1 | 23 | 1 | 0 | 1 | 17 | 3 | 5 |
| March | 1 | 1 | 1 | 0 | 1 | 10 | 0 | 1 | 1 | 1 | 0 | 13 | 22 | 14 | 45 | 64 | 32 | 1 | 3 | 18 | 5 | 10 |
| April | 32 | 1 | 12 | 1 | 1 | 67 | 0 | 1 | 0 | 1 | 0 | 2 | 596 | 0 | 103 | 27 | 181 | 3 | 39 | 24 | 12 | 49 |
| May | 105 | 412 | 19 | 2 | 0 | 1 | 0 | 20 | 9 | 7 | 1 | 1 | 49 | 0 | 183 | 1 | 886 | 19 | 5 | 18 | 55 | 48 |
| June | 17 | 93 | 1 | 3 | 0 | 1 | 0 | 16 | 0 | 2 | 5 | 0 | 1 | 0 | 58 | 0 | 188 | 4 | 0 | 7 | 29 | 27 |
| July | 3 | 9 | 1 | 2 | 1 | 0 | 1 | 3 | 0 | 1 | 1 | 0 | 1 | 1 | 7 | 0 | 21 | 1 | 0 | 5 | 110 | 15 |
| August | 2 | 2 | 0 | 1 | 0 | 0 | 1 | 3 | 0 | 1 | 1 | 0 | 0 | 0 | 5 | 0 | 24 | 1 | 0 | 3 | 173 | 19 |
| September | 2 | 2 | 0 | 1 | 0 | 0 | 3 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 6 | 0 | 0 | 1 | 8 | 7 |
| October | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 1 | 0 | 0 | 0 | 18 | 0 | 9 | 1 | 0 | 1 | 3 | 7 |
| November | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 2 | 0 | 0 | 3 | 14 | 5 |
| December | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | 1 | 1 | 0 | 2 | 0 | 0 | 9 | 0 | 4 |