condition mean min max ZT0-3 100.73652 100.73652 100.73652 ZT4-7 222.8373015 222.8373015 222.8373015 ZT8-11 177.73162100000002 177.73162100000002 177.73162100000002 ZT12-15 205.93796350000002 205.93796350000002 205.93796350000002 ZT16-19 282.894516 282.894516 282.894516 ZT20-23 537.8560905 537.8560905 537.8560905