condition mean min max ZT0-3 83.44999999999999 83.44999999999999 83.44999999999999 ZT4-7 29.0 29.0 29.0 ZT8-11 58.0 58.0 58.0 ZT12-15 66.65 66.65 66.65 ZT16-19 85.2 85.2 85.2 ZT20-23 71.6 71.6 71.6