The version 1 data reflect processing up to January 15, 1996. A number of shortcuts were taken to make these data available within three weeks of the last observation. ... This constitutes about 25% of the observing time in F450W and F814W; we expect the limiting depth to be about 0.1 mag fainter when those frames are included in the final stacks. ... They are not individually visible in the final drizzled images, but nevertheless contribute to the overall noise. ...