Lancaster gen types wanted

Would any of you gen types out there help me by explaining this drawing, Avro D629, please. It is the enormous table of ratios etc that I don’t understand. Here’s a pic of the drawing:

It’s very much reduced in size as the original is 16Mb. But if any one can help, I can send a full size copy.

The table gives info on the positioning and arrangement of the fuselage stringers relative to each former/frame. There seem to be many more columns to the table than are referenced in the drawings above the table. And, of course, it’s difficult to read.

Bless all your cotton socks
Mike