condition mean min max ZT0-3 161.1285 161.1285 161.1285 ZT4-7 148.3915 148.3915 148.3915 ZT8-11 186.0315 186.0315 186.0315 ZT12-15 121.1825 121.1825 121.1825 ZT16-19 199.02800000000002 199.02800000000002 199.02800000000002 ZT20-23 151.62349999999998 151.62349999999998 151.62349999999998