condition mean min max ZT0-3 1672.1999999999998 1672.1999999999998 1672.1999999999998 ZT4-7 1541.2 1541.2 1541.2 ZT8-11 1437.95 1437.95 1437.95 ZT12-15 1676.4 1676.4 1676.4 ZT16-19 1888.85 1888.85 1888.85 ZT20-23 1621.15 1621.15 1621.15