condition mean min max ZT0-3 807.6 807.6 807.6 ZT4-7 1082.3 1082.3 1082.3 ZT8-11 1050.0 1050.0 1050.0 ZT12-15 996.0 996.0 996.0 ZT16-19 747.2 747.2 747.2 ZT20-23 763.3 763.3 763.3