Top whisker: Top box (Q1) + 1.5 x interquartile range (Q1-Q3)
Top box (Q1) below this value are 75% all the data points.
Median (Q2)
interquartile range 50% of all the data point are within this range.
Bottom box (Q3) above this value are 75% of all the data points
Bottom whisker: Bottom box (Q3) - 1.5 x interquartile range (Q1-Q3)
o outliers between 1.5 and 3 times the interquartile range
+ extreme outliers above 3x the interquartile range