f1=c1 [value] is a/the median/quartile/decile/percentile/fraction-type of median with numerator f2, denominator f3 in property/amount c2 (ka/ni) among p1 (s) (ordered set) by standard c4.
Median (=porna'ofrinu li pa li re;porna'o). 1st quartile (=porna'ofrinu li pa li vo). 3rd decile (=porna'ofrinu li ci li pano). 5th percentile (=porna'ofrinu li mu li panono).