what am I doing wrong? calculating max-min as a difference??

[dallenk]

Here is my graph template.


CDEF




i removed the cdefs to divide by 10 on the raw data, for whatever reason the 4RF radios don't give me the actual number, I have to do the math for the graph.

i did search for how to do the min/max difference, and I thought I understood it but apparently I don't lol.

Any pointers or did I just do something blatantly obviously wrong