condition mean min max ZT0-3 101.988915 101.988915 101.988915 ZT4-7 153.62279999999998 153.62279999999998 153.62279999999998 ZT8-11 180.72129 180.72129 180.72129 ZT12-15 119.279534 119.279534 119.279534 ZT16-19 94.45416449999999 94.45416449999999 94.45416449999999 ZT20-23 67.91463350000001 67.91463350000001 67.91463350000001