title: Python: quantile for list of sublists
body: <p>I want to find quantiles of element n in sublists.</p>
  
  <p>Let's say I have (in reality it's much bigger):</p>
  
  <p>List=[[[1,3,0,1],[1,2,0,1],[1,3,0,1]],[[2,2,1,0],[2,2,1,0],[2,2,1,0]]]</p>
  
  <p>I want a way to find quantiles (like numpy.percentile) for the 2:nd elements in the sublist [[1,3,1,1],[1,2,0,1],[9,3,2,1]] and in [[1,2,3,4],[0,2,0,0],[1,2,2,2]] and then I want to do a maximum function so I know which subgroup of those two had the highest chosen quantile, and I also want to know the values the other 3 constant values (1:st, 3:rd and 4:th elements) has at that maximum.</p>