Questions on Soyo Dragon+ and MBM

[Homerboy]

Im running motherboard monitor on my soyo dragon+ but I have a question as to what on-board sensor is measuring what.

idle:
Sensor 1 = 113°F
Sensor 2 = 87ºF
Sensor 3 = 120ºF

any help... I can't find this documented anywhere
TIA

 

[DusterAZ]

Sensor 2 is the case temp. I'm at work so I am not sure which is the CPU temp (Sensor 1 or 3), but it should be the one that is not fluctuating. The one left is supposedly the chipset temp (northbridge) after I looked all over the web. I put some thermal compound on the northbridge and that sensor stopped fluctuating as much.