condition mean min max ZT0-3 1494.65 1494.65 1494.65 ZT4-7 1746.8 1746.8 1746.8 ZT8-11 1615.25 1615.25 1615.25 ZT12-15 1449.1999999999998 1449.1999999999998 1449.1999999999998 ZT16-19 1374.25 1374.25 1374.25 ZT20-23 1456.9499999999998 1456.9499999999998 1456.9499999999998