| 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 | 10 | 0 | 2 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 2 | 0 | 0 | 2 | 1 | 0 | 1 | — | 1 |
| February | 45 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 25 | 0 | 13 | 0 | 1 | 0 | 1 | 2 | 0 | 1 |
| March | 58 | 418 | 4 | 1 | 1 | 3 | 0 | 1 | 9 | 2 | 0 | 0 | 1 | 0 | 0 | 3 | 5 | 23 | 6 | 19 | 0 | 36 | 0 | 2 | 4 | 65 | 2 |
| April | 3 | 24 | 2 | 4 | 1 | 0 | 0 | 1 | 20 | 0 | 1 | 0 | 1 | 1 | 0 | 2 | 16 | 2 | 2 | 5 | 0 | 25 | 1 | 1 | 3 | 17 | 2 |
| May | 3 | 4 | 115 | 9 | 414 | 1 | 0 | 1 | 9 | 0 | 1 | 8 | 1 | 7 | 2 | 0 | 1 | 1 | 101 | 0 | 6 | 134 | 10 | 7 | 10 | 8 | 2 |
| June | 11 | 6 | 70 | 12 | 80 | 1 | 3 | 0 | 0 | 0 | 23 | 6 | 1 | 16 | 3 | 0 | 0 | 0 | 253 | 0 | 5 | 179 | 11 | 1 | 20 | 9 | 4 |
| July | 2 | 14 | 31 | 4 | 9 | 0 | 1 | 1 | 0 | 1 | 17 | 4 | 0 | 2 | 15 | 1 | 2 | 0 | 7 | 0 | 5 | 19 | 1 | 0 | 13 | 88 | 4 |
| August | 1 | 2 | 6 | 2 | 6 | 0 | 1 | 0 | 0 | 2 | 1 | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 8 | 8 | 1 | 0 | 5 | 73 | 3 |
| September | 1 | 4 | 5 | 1 | 2 | 0 | 0 | 0 | 0 | 2 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 12 | 5 | 1 | 0 | 2 | 1 | 2 |
| October | 6 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 2 | 0 | 0 | 1 | 1 | 1 |
| November | 2 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 2 |
| December | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 |