c100. Finally able to return to clearing that ice biome at the top. Coring an ice biome feels really weird. In the base game, it's something one basically never did, cuz cold is so valuable. But remember there's a whole-map biome above this that is nothing but -55c everywhere.
At center-bottom of the picture, you can see the 4 bedrooms at the top of the rightmost column. My combination o2/ceramic/cooling production system will fill 5 levels there.