condition mean min max ZT0-3 149.51975147000002 69.35058819 229.68891475 ZT4-7 413.95999745000006 383.48393395000005 444.43606095 ZT8-11 271.575224825 210.11651104999999 333.03393860000006 ZT12-15 90.46536291 88.81696817 92.11375765 ZT16-19 172.31687775 145.94879514999997 198.68496035 ZT20-23 217.416632875 200.95270104999997 233.88056470000004