I made a plot of the masses of the 1283 gas giants that I've visited (they're all from my EDDiscovery logs) - the masses are on the Y axis, the number found are on the X axis. Interestingly, Class IIIs are the most numerous by far (I thought Class Is would be the most common), and they span the whole mass range from just over 1 ME (rather unlikely!) to 3500 ME (which is getting into small Brown Dwarf territory). Class IVs tend to be more massive though - the lower mass Class IVs are found close to stars (the high local temperature is what makes them Class IV), but the high mass Class IVs can be found anywhere because their high mass is what makes them hot (and therefore Class IV). Class V are similar but rarer.
Class II GGs are the pale blue line that runs almost along the red "GG with Water Life" line (Class IIs go up to about 1250 ME, water life goes up to 1000 ME). The purple line below that are the Class Is (going from up to about 850 ME). The dark blue line below that are the Ammonia LIfe GGs (up to 800 ME). Class IIIs go up to 3500 ME, Class IVs to 3800 ME, and Class Vs to at least 3550 ME. Helium Rich ones are the rarest and seem to go up to about 1000 ME. The Water Giants I've found are between 20 and 130 ME.
Class II GGs are the pale blue line that runs almost along the red "GG with Water Life" line (Class IIs go up to about 1250 ME, water life goes up to 1000 ME). The purple line below that are the Class Is (going from up to about 850 ME). The dark blue line below that are the Ammonia LIfe GGs (up to 800 ME). Class IIIs go up to 3500 ME, Class IVs to 3800 ME, and Class Vs to at least 3550 ME. Helium Rich ones are the rarest and seem to go up to about 1000 ME. The Water Giants I've found are between 20 and 130 ME.
