in general anywhere between 180 and 220 iswhat you expect to see but all cyls want to be failrly even.
184, 188, 182,186 for example would be a set of very healthy readings
genral rule of thumb upto 15 psi between any two cyls is expected on an older engine
but when your getting differances of upto 30 psi between any two cyls it's not healthy something will be developing but should be managable and not cause big problems for the moment but performance and economy will be suffering
40 + PSI differance means something is broken and is going to start developing ever more rapidly much more loss of compression will cause running problems more than likely that the engine is lame and thirsty
