condition mean min max ZT0-3 3397.1 3397.1 3397.1 ZT4-7 4537.0 4537.0 4537.0 ZT8-11 3484.6 3484.6 3484.6 ZT12-15 3250.2 3250.2 3250.2 ZT16-19 2668.45 2668.45 2668.45 ZT20-23 2747.25 2747.25 2747.25