condition mean min max ZT0-3 944.55 944.55 944.55 ZT4-7 1743.4 1743.4 1743.4 ZT8-11 1482.75 1482.75 1482.75 ZT12-15 987.2 987.2 987.2 ZT16-19 516.0 516.0 516.0 ZT20-23 662.95 662.95 662.95