pre	post
80.5	82.2
84.9	85.6
81.5	81.4
82.6	81.9
79.9	76.4
88.7	103.6
94.9	98.4
76.3	93.4
81.0	73.4
80.5	82.1
85.0	96.7
89.2	95.3
81.3	82.4
76.5	72.5
70.0	90.9
80.4	71.3
83.3	85.4
83.0	81.6
87.7	89.1
84.2	83.9
86.4	82.7
76.5	75.7
80.2	82.6
87.8	100.4
83.3	85.2
79.7	83.6
84.5	84.6
80.8	96.2
87.4	86.7