Boxplot statistics
Variable	lower whisker	lower hinge	median	upper hinge	upper whisker
pre	8.36	14.93	19.345	21.55	30.33
post1	7.55	19.645	26.98	35.495	55.21
post2	8.78	21.33	32.86	45.77	71.33

Boxplot Notches
Variable	lower bound	median	upper bound
pre	18.3901735229198	19.345	20.2998264770802
post1	24.6938973320664	26.98	29.2661026679336
post2	29.3349306495711	32.86	36.3850693504289