condition mean min max ZT0-3 117.1 117.1 117.1 ZT4-7 88.0 88.0 88.0 ZT8-11 81.7 81.7 81.7 ZT12-15 158.4 158.4 158.4 ZT16-19 173.95 173.95 173.95 ZT20-23 166.14999999999998 166.14999999999998 166.14999999999998