condition mean min max ZT0-3 20.656499999999998 19.581249999999997 21.731749999999998 ZT4-7 14.17295 14.17295 14.17295 ZT8-11 16.828249999999997 16.828249999999997 16.828249999999997 ZT12-15 0 0 0 ZT16-19 45.5519 45.5519 45.5519 ZT20-23 35.78075 35.78075 35.78075