How To Work Out Grade In Sheldon Scale?

This coin was graded with CGS UK based TPG using 1-100 scale.Here is some clues:
Grade Category
80 -- 100 Uncirculated
75 -- 75 Almost Uncirculated
60 -- 70 Extremely Fine
40 -- 59 Very Fine
20 -- 39 Fine
1 -- 19 Good, Very Good


Midpoint Category
10 Very Good
30 Fine
50 Very Fine
70 Extremely Fine

Coins above 80 fall into our uncirculated range, they may have bag marks, cabinet friction or toning or other signs of slight mishandling whilst in collections evidence of which will lower their grade, but essentially we have assessed them as having no wear consistent with being in circulation. Anything above 82 will be exceptionally nice what dealers often term gem or choice and consequently scarce and desirable.(Quotes from official site)

Here is the BUT.According to NGC table:
http://www.ngccoin.com/world/intern...g-scales.asp
UK EF starts at the same point as US Sheldon AU 55-so this is my question.Coin was graded EF 65 UK standards.What is US equivalent?