condition mean min max ZT0-3 1337.75 1337.75 1337.75 ZT4-7 1401.6 1401.6 1401.6 ZT8-11 1497.85 1497.85 1497.85 ZT12-15 1641.0 1641.0 1641.0 ZT16-19 1704.0 1704.0 1704.0 ZT20-23 1784.6999999999998 1784.6999999999998 1784.6999999999998