mamiRna 3p only items length stats

Q1 20.000000
median 21.000000
Q3 21.000000
average 20.717897
min 16.000000
max 27.000000
count 989
total 20490.000000
standard deviation 1.039841

 16  1
 17 * 11
 18 ** 18
 19 ****** 54
 20 ****************************** 253
 21 ************************************************************ 508
 22 ************** 116
 23 *** 22
 24  2
 25  2
 26  1
 27  1