Table 2

COMPARISON OF MEAN DEPTHS

p VALUE

SIGNIFICANCE

SSC vs. PSR

0.0066

Yes

SSC vs. MDR

0.0322

Yes

SSC vs. FBD

0.0285

Yes

SSC vs. CPL

0.0032

Yes

SSC vs. DPL

0.0003

Yes

FBD vs. MDR

0.0860

No

FBD vs. PSR

0.0589

No