P4DC6+: which temperatures on which sensors?

My P4DC6+ m/b has w83627hf health chip the supports 3 temperature sensors,
one for the motherboard and one for each CPU.

The output from lm_sensors (in Linux) is shown below. The m/b sensor is
apparently temp1. How can determine which CPU temperature is reflected by
temp2 and which by temp3?

Thanks.

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w83627hf-isa-0290
Adapter: ISA adapter
VCore 1: +1.49 V (min = +1.42 V, max = +1.57 V)
VCore 2: +3.26 V (min = +1.42 V, max = +1.57 V)
+3.3V: +3.25 V (min = +3.14 V, max = +3.46 V)
+5V: +4.73 V (min = +4.73 V, max = +5.24 V)
+12V: +11.92 V (min = +10.82 V, max = +13.19 V)
-12V: -11.62 V (min = -13.18 V, max = -10.88 V)
-5V: -2.08 V (min = -5.25 V, max = -4.75 V)
V5SB: +5.32 V (min = +4.73 V, max = +5.24 V)
VBat: +3.18 V (min = +2.40 V, max = +3.60 V)
fan1: 0 RPM (min = 2848 RPM, div = 2)
fan2: 0 RPM (min = 2848 RPM, div = 2)
fan3: 0 RPM (min = 1424 RPM, div = 4)
temp1: +29°C (high = +50°C, hyst = +45°C) sensor = thermistor
temp2: +31.5°C (high = +65°C, hyst = +60°C) sensor = thermistor
temp3: +29.5°C (high = +65°C, hyst = +60°C) sensor = thermistor
vid: +1.500 V (VRM Version 9.0)
alarms: Chassis intrusion detection ALARM
beep_enable:
Sound alarm disabled