condition mean min max ZT0-3 1534.45 1534.45 1534.45 ZT4-7 1796.1 1796.1 1796.1 ZT8-11 1650.2 1650.2 1650.2 ZT12-15 1648.25 1648.25 1648.25 ZT16-19 1516.1999999999998 1516.1999999999998 1516.1999999999998 ZT20-23 1445.3 1445.3 1445.3