condition mean min max ZT0-3 1231.7 1231.7 1231.7 ZT4-7 1226.9 1226.9 1226.9 ZT8-11 1357.15 1357.15 1357.15 ZT12-15 1606.9499999999998 1606.9499999999998 1606.9499999999998 ZT16-19 2075.05 2075.05 2075.05 ZT20-23 1585.85 1585.85 1585.85