condition mean min max ZT0-3 792.65 792.65 792.65 ZT4-7 882.4 882.4 882.4 ZT8-11 812.2 812.2 812.2 ZT12-15 963.45 963.45 963.45 ZT16-19 1104.35 1104.35 1104.35 ZT20-23 945.85 945.85 945.85