condition mean min max ZT0-3 32.7698 27.350949999999997 35.6154 ZT4-7 31.962 31.962 31.962 ZT8-11 25.14565 25.14565 25.14565 ZT12-15 47.9118 46.87785 48.945750000000004 ZT16-19 14.372 14.372 14.372 ZT20-23 31.7641 31.7641 31.7641