How do you get oil viscosity from UOA numbers?

[tc1446]

When one gets a UOA back and the number for vicosity are 9.80 @ 100c and 58.5 @ 210F, how do you determine that its 30w or whatever?

 

[Towncivilian]

SAE J300 chart

 

[tc1446]

Thanks Towncivilian. I've bookmarked that chart for future tests.