Mo is moment, whose unit is N m. Mw is the magnitude measured from moment release. VarRed is variance reduction, which is the same as quality mentioned before. The variance reduction is defined as an index of a waveform fit between observation and synthetic waveforms. Variance reduction is defined as the sum of squares of the difference in amplitude normalized by the observed waveforms.
Depth is determined by assuming several point sources.
We chose the solution whose variance reduction becomes the maximum. Point source interval is 3km between 5km and 120km, 5km between 120km and 200km, and 10km between 200km and 400km. You will find the figure showing the result at the bottom. Right hand side is the moment tensor solution. Moment tensor is shown in equal area lower hemisphere projection.