Rookie needs guidance for compression test

You properly did a dry test first. Typically if a low reading(s) is found in one or more cylinders then you squirt oil. The purpose of putting oil in the cylinders is to help seal the rings to the cylinder walls to determine if you have a ring problem or possibly something else. (like a burned valve or blown head gasket) Notice that the compression in #5 increased after squirting in the oil? That tells me that the piston rings in that hole are not sealing as well as the others. The oil temporarily helped seal the rings to the cylinder walls. You got quite a bit of variation between cylinders so your engine is not in the best of shape but it will run.