Doing it right -need some advice

First thing I would do is put a charger on the battery and pump it up
The Second thing I would do is REDO the test.
I would squirt a little oil into every cylinder, then bump her over a couple of revolutions, then repeat on the oil, then walk away for an hour.
This oil will fall into the clearance between the piston and the cylinder wall, be stopped by the top ring, then by capillary action it will climb up and all around the top ring, maybe finding the gap and crawling down onto the second ring. No matter.
When you get back, you gotta pump all that oil outta there else it will artificially increase your pressure. This will make a mess, so cover the engine with an old blanket or something.
After the oil is pumped out, you can begin the test; but this time run it in reverse, starting with the LAST cylinder that you previously ended with;
and make sure the cranking rpm stays about the same.
This is what I would do.
Your pressure will be slightly higher, due to that the oil has coated the tops of the chambers, and was Not pumped out. You can't do anything about that. But your engine depends, even while running, on that oil sealing the rings both to the cylinder walls, and to the ringlands. So IMO, you will get better results in the new test. Hopefully the numbers will even up as well.
I guess we'll see.