Negative values indicate West of the prime meridian. Indicates the film exposure quality. Indicates how the camera was tilted with respect to the Earth. Yes there is an adjacent photograph of the same area. No there is not.
Units are millimeters.
Indicates the focal length of the camera lens used. Note that this is not logged by the crew. So the most likely lens size determined by analyzing the photograph. Yes there is a caption in the captions table for this photograph. This is a count of how many images there are for this photograph in the images table.