Okay. The analysis of rock, ice, & gas planets is about what I would expect to find. But, continuing on to analyze the various quadrants, in each case it includes figures for gas planets with no atmosphere. Doesn't this call the rest of the numbers into question? Or am I missing something?
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The great tragedy of science...the slaying of a beautiful hypothesis by an ugly fact. (T. H. Huxley)
That is for Vaccuum breathing races with gas colonization tech. Admittedly, it is very rare to have as a starting setup, but it is possible with the right mod.
More relevant, your vaccuum breathers will eventually develop gas colonization tech, so those numbers will definitely become important in the mid-late game period.
Specifically;
The numbers you see are the average value of one starsystem to a race with that atmo and surface type.
If the race has two or three surface types available, you can add the numbers together.