CPUTIN = CPU Temperature Index
AUXTIN = Auxiliary Temperature Index
SYSTIN = System Temperature Index
CPUTIN is different from CoreTemp. CoreTemp is the sensor on the processor while CPUTIN is motherboard CPU temp sensor.
AUXTIN is the power supply temp sensor if there is one. While SYSTIN relates to Motherboard.
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TMPIN 0 = MOBO = SYS
TMPIN 1 = CPU
TMPIN 2 = MCH = Northbridge
TMPIN 3 = Sensor near GPU/VRMs
Not sure about TMPIN values, i could be wrong.