condition mean min max ZT0-3 527.5 527.5 527.5 ZT4-7 812.8 812.8 812.8 ZT8-11 885.0 885.0 885.0 ZT12-15 941.35 941.35 941.35 ZT16-19 736.0 736.0 736.0 ZT20-23 590.65 590.65 590.65