condition mean min max ZT0-3 452.683 292.27 586.7035000000001 ZT4-7 271.36899999999997 271.36899999999997 271.36899999999997 ZT8-11 411.91949999999997 411.91949999999997 411.91949999999997 ZT12-15 767.98275 728.8595 807.106 ZT16-19 722.386 722.386 722.386 ZT20-23 762.308 762.308 762.308