condition mean min max ZT0-3 185.0365 158.75599999999997 220.61849999999998 ZT4-7 154.07150000000001 154.07150000000001 154.07150000000001 ZT8-11 178.555 178.555 178.555 ZT12-15 226.05975 214.27949999999998 237.84 ZT16-19 178.942 178.942 178.942 ZT20-23 162.15699999999998 162.15699999999998 162.15699999999998