This is literally the easiest thing to implement... and the only thing preventing me from using AIDA64 instead of HWINFO.
Why the reluctance? People have been asking for this since 2016 and it would be easier than telling people "It's not possible for the SensorPanel, but you can have that data either logged into a HTML or CSV log file".
Pseudo code... excluding UI Min/Max/Avg selector.
# Initialize variables to store min and max sensor
min_sensor = 1
max_sensor = 1
# Read from sensor
current_sensor = read_sensor()
# Check if current sensor is lower than current min
if current_sensor < min_sensor:
min_sensor = current_sensor
# Check if current sensor is higher than current max
if current_sensor > max_sensor:
max_sensor = current_sensor