condition mean min max ZT0-3 0.17591822525 0.116755852 0.23508059850000002 ZT4-7 0.06953451999999999 0.06502303849999999 0.0740460015 ZT8-11 2.06856076075 0.24898109149999997 3.88814043 ZT12-15 7.925295289 6.0495484155 9.8010421625 ZT16-19 4.483763821 3.4934691855 5.4740584565 ZT20-23 1.6822108767500001 1.3038018455 2.060619908