Open Access
Table 1
Detected precovery observations of PHAs in collections of photographic plates.
| Collection | Years | Number of plates | Exposure time | Precoveries |
|---|---|---|---|---|
| OCA Caussols | 1978–1996 | 3600 | Long | 6 |
| OCA Nice | 1935–1983 | 8200 | Short | 0 |
| LAB | 1937–1996 | 4350 | Short | 0 |
| POSSI | 1949–1958 | 2070 | Long | 2 |
| POSSII | 1985–2000 | 1780 | Long | 3 |
| ESO/SERC | 1973–1990 | 2440 | Long | 1 |
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