Depending on what your gauge reads:
Compression pressure: kPa (bar,kg/cc,psi)/ 300rpm
Standard: 1285 (12.85,13.1,186)
Minimum: 981 (9.81,10.0, 142 )
Diff between cylinders: 98 ( 0.98, 1.0, 14 )
Remember to use a fully charged battery to turn engine over.
If compression on one or more cylinders is low pour a small amount of engine oil into cylinder through spark plug hole and retest. If this helps, piston rings may be worn or damaged.
If pressure stays low a valve may be sticking or seating improperly.
If compression in adjacent cylinders is low and adding oil doesn't help compression there may be a leakage past the gasket surface.
Hope this helps,
Simon.