condition mean min max ZT0-3 90.3695 90.3695 90.3695 ZT4-7 78.90695 78.90695 78.90695 ZT8-11 53.104749999999996 53.104749999999996 53.104749999999996 ZT12-15 55.87165 55.87165 55.87165 ZT16-19 66.5649 66.5649 66.5649 ZT20-23 71.43756666666667 71.43756666666667 71.43756666666667