condition mean min max ZT0-3 26.1045 24.8554 27.3536 ZT4-7 17.46535 17.46535 17.46535 ZT8-11 17.2098 17.2098 17.2098 ZT12-15 0 0 0 ZT16-19 30.301499999999997 30.301499999999997 30.301499999999997 ZT20-23 26.67675 26.67675 26.67675