2,049 London Plane — day 21
1,410 London Plane — day 22
1,184 London Plane — day 20
31 Days measured
| Day | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 206 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 116 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 | 1 |
| 2 | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 0 |
| 3 | 83 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 32 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 | 1 |
| 4 | 29 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| 5 | 14 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |
| 6 | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 1 |
| 7 | 72 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |
| 8 | 127 (High) | 0 (Low) | 16 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 0 | 0 |
| 9 | 118 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 | 1 |
| 10 | 103 (High) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 9 (Low) | 2 | 1 |
| 11 | 84 (Medium) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 45 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 1 | 0 |
| 12 | 14 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |
| 13 | 64 (Medium) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 31 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 1 | 0 |
| 14 | 75 (Medium) | 18 (Low) | 19 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 65 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 13 (Low) | 2 | 1 |
| 15 | 205 (Very high) | 93 (Medium) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 98 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 19 (Medium) | 0 | 2 |
| 16 | 103 (High) | 823 (Very high) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 46 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 14 (Low) | 4 | 2 |
| 17 | 79 (Medium) | 998 (Very high) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 1 (Low) | 4 (Low) | 33 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 | 0 |
| 18 | 36 (Medium) | 907 (Very high) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 26 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 1 | 0 |
| 19 | 22 (Low) | 1,024 (Very high) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 18 (Medium) | 1 (Low) | 2 (Low) | 25 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 10 (Low) | 0 | 1 |
| 20 | 20 (Low) | 1,184 (Very high) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 0 (Low) | 4 (Low) | 24 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 4 | 1 |
| 21 | 12 (Low) | 2,049 (Very high) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 24 (Medium) | 0 (Low) | 2 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 1 | 1 |
| 22 | 33 (Medium) | 1,410 (Very high) | 10 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 37 (Medium) | 1 (Low) | 6 (Low) | 25 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 1 | 2 |
| 23 | 22 (Low) | 767 (Very high) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 43 (Medium) | 1 (Low) | 10 (Low) | 18 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 0 | 1 |
| 24 | 9 (Low) | 916 (Very high) | 13 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 80 (High) | 1 (Low) | 2 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 2 | 0 |
| 25 | 8 (Low) | 442 (Very high) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 35 (Medium) | 0 (Low) | 3 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 1 |
| 26 | 11 (Low) | 534 (Very high) | 4 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 57 (High) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 5 (Low) | 0 | 1 |
| 27 | 4 (Low) | 510 (Very high) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 62 (High) | 1 (Low) | 5 (Low) | 5 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 6 (Low) | 2 | 2 |
| 28 | 27 (Low) | 805 (Very high) | 6 (Low) | 4 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 62 (High) | 0 (Low) | 25 (Medium) | 12 (Low) | 1 (Low) | 39 (Medium) | 0 (Low) | 3 (Low) | 10 (Low) | 0 | 2 |
| 29 | 29 (Low) | 221 (High) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 45 (Medium) | 0 (Low) | 14 (Low) | 2 (Low) | 0 (Low) | 34 (Medium) | 1 (Low) | 1 (Low) | 4 (Low) | 4 | 1 |
| 30 | 4 (Low) | 78 (Medium) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 2 |
| 31 | 4 (Low) | 75 (Medium) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 3 | 1 |