condition mean min max ZT0-3 42.980445945 30.64289378 55.31799811 ZT4-7 19.1298022675 18.847868480000002 19.411736055 ZT8-11 24.6803257125 19.597414965 29.76323646 ZT12-15 28.865188680000003 27.852402435000002 29.877974925000004 ZT16-19 28.493129500000002 27.77327841 29.21298059 ZT20-23 28.114214994999998 27.05850949 29.1699205