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Silver-studded Blue: Counts for the year 1990
| 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 | ||||||||||||||||||||||||||
| Studland Heath | . | . | . | . | . | . | . | 1 | 2 | . | 7 | 6 | 5 | 1 | . | 1 | . | . | . | . | . | . | . | . | ||
| Tadnoll | . | . | . | . | . | . | 1 | . | 8 | . | . | . | . | . | . | |||||||||||
| West Moors (RAOC) | . | . | . | . | . | 1 | . | 5 | 3 | 38 | 29 | 71 | 95 | 135 | 121 | 15 | 10 | 11 | 3 | 3 | 2 | 2 | 1 | . | . | |
| Pitts Wood | . | . | . | . | . | . | . | . | 1 | . | . | . | 20 | 12 | 31 | 15 | . | 7 | . | . | . | . | . | . | ||
| Brentmoor Heath | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 8 | 54 | . | . | . | . | . | . | . | . | . | . |
