I have a P5B-E so I'm not sure if I can do you any good but your data file seems to work fine on my board so I suppose the test will be valid on it too.

Running Orthos Blend
Idle
Voltage 3--varies between 3.16v and 3.22v, jumps around alot
Voltage 5--5.07v never moves
Asus Probe--5.12v very steady

Load
Voltage 3--varies between 4.28v and 6.40v, jumps all over in this range
Voltage 5--5.07v never moves
Asus Probe--5.09v very steady

The 12v and 3.3v both give the same readings a Probe does


Hope this helps