Photo Index Column Titles and Descriptions

The column headings are as follows:
C1 Counter
The number of the shot according to the camera's film counter
C2 Negative Number
The number on the film negative, providing a more definitive reference
C3 CD Number
This gives which CD (there are five in total) the photograph is on
C4 CD Frame Number
This gives the CD frame number (there are up to 108 on each CD) for each shot
C5 Weather Log
An 'x' in this column indicates the photograph forms part of the hourly weather observation set
C6 Documentary
An 'x' in this column indicates the photograph is a general interest picture
C7 Other
An 'x' in this column indicates a photograph outside the above two categories
C8 Date
All dates are given in UTC
C9 Time
All times are UTC
C10 Sun
An 'x' in this column indicates prevailing conditions were clear and sunny
C11 Overcast
An 'x' in this column indicates cloudy conditions
C12 Rain
An 'x' in this column indicates prevailing local rainshowers
C13 Comments
Any relevant comments are included in this column