condition mean min max ZT0-3 85.17234912800001 1.5976888219999998 168.747009434 ZT4-7 1519.340169775 835.7811225500001 2202.899217 ZT8-11 2564.83274125 2537.0228049999996 2592.6426775 ZT12-15 811.921425375 258.66834455 1365.1745062 ZT16-19 79.5227828175 78.97443153 80.071134105 ZT20-23 37.297846629999995 19.843163795000002 54.752529464999995