condition mean min max ZT0-3 960.4 960.4 960.4 ZT4-7 1002.7 1002.7 1002.7 ZT8-11 1077.65 1077.65 1077.65 ZT12-15 996.05 996.05 996.05 ZT16-19 925.8499999999999 925.8499999999999 925.8499999999999 ZT20-23 1073.35 1073.35 1073.35