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Hampstead Heath: Counts for the year 1987
| APR | MAY | JUN | JUL | AUG | SEP | |||||||||||||||||||||
| Week no. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| Site | ||||||||||||||||||||||||||
| Large Skipper | . | . | . | . | . | . | . | . | . | 4 | 10 | 7 | . | . | . | . | . | . | . | . | . | . | ||||
| Large White | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | ||||
| Small White | . | . | 1 | . | . | . | . | . | . | . | . | . | 2 | 2 | 3 | 1 | . | 1 | . | . | . | . | ||||
| Green-veined White | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Peacock | . | 4 | . | 1 | . | . | 1 | 1 | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | ||||
| Comma | . | 1 | . | . | . | . | . | . | . | . | . | 1 | 4 | 3 | 2 | 1 | . | . | . | . | 1 | . | ||||
| Speckled Wood | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | . | ||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 1 | 1 | 5 | 4 | 7 | 5 | 2 | 5 | . | . | . | . | . | ||||
| Unknown White | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | 1 | 1 | . | . | . | . | . | . | ||||
