| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Am | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
| January | 734 | 1 | 3 | 0 | 1 | 0 | 0 | 4 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 28 | 0 | 5 | 1 | 0 | 1 | 1 | 0 | 0 | 3 | 0 | 2 |
| February | 123 | 0 | 5 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 30 | 0 | 48 | 0 | 2 | 1 | 1 | 0 | 0 | 6 | 0 | 2 |
| March | 222 | 230 | 16 | 1 | 0 | 1 | 0 | 4 | 30 | 1 | 0 | 0 | 10 | 1 | 2 | 35 | 8 | 19 | 4 | 149 | 3 | 5 | 1 | 5 | 20 | 5 | 6 |
| April | 31 | 530 | 15 | 54 | 6 | 4 | 0 | 0 | 179 | 0 | 0 | 3 | 0 | 5 | 2 | 24 | 233 | 3 | 49 | 2 | 1 | 748 | 13 | 6 | 19 | 14 | 13 |
| May | 31 | 20 | 287 | 100 | 220 | 6 | 1 | 0 | 185 | 0 | 1 | 11 | 0 | 7 | 1 | 0 | 9 | 0 | 82 | 0 | 3 | 896 | 23 | 4 | 9 | 38 | 22 |
| June | 8 | 3 | 50 | 21 | 26 | 2 | 6 | 0 | 6 | 0 | 33 | 12 | 0 | 6 | 16 | 0 | 9 | 0 | 56 | 0 | 5 | 53 | 8 | 1 | 9 | 15 | 6 |
| July | 3 | 1 | 43 | 9 | 2 | 2 | 4 | 0 | 0 | 0 | 17 | 4 | 0 | 1 | 12 | 0 | 0 | 0 | 5 | 0 | 7 | 18 | 2 | 0 | 5 | 57 | 3 |
| August | 3 | 1 | 9 | 3 | 1 | 0 | 2 | 0 | 0 | 6 | 2 | 2 | 0 | 1 | 2 | 0 | 0 | 0 | 2 | 0 | 14 | 10 | 1 | 0 | 3 | 14 | 2 |
| September | 2 | 1 | 6 | 2 | 2 | 0 | 8 | 0 | 0 | 4 | 1 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 3 | 0 | 24 | 14 | 1 | 0 | 3 | 8 | 3 |
| October | 6 | 2 | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 1 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 6 | 7 | 0 | 0 | 9 | 7 | 2 |
| November | 38 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 5 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 4 | 1 | 1 |
| December | 261 | 2 | 2 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 10 | 0 | 0 | 5 | 1 | 1 |