For the following table, I'm trying to figure out what formula I could use to plug in a number from the Vk column, and out pops RR. I'm sure there are a practically infinite number of formulas or functions that could be used, but I can't think of even one at the moment.
It doesn't even have to be completely accurate, just reasonably accurate.
Any ideas?
Rich (BB code):
Vk RR
16.0 10.0
17.5 9.0
20.0 8.0
22.0 7.0
26.0 6.0
31.7 5.0
40.0 4.0
54.0 3.0
81.0 2.0
110.0 1.5
137.0 1.2
167.0 1.0
Any ideas?