condition mean min max ZT0-3 1124.8 1124.8 1124.8 ZT4-7 860.0 860.0 860.0 ZT8-11 993.0 993.0 993.0 ZT12-15 1004.7 1004.7 1004.7 ZT16-19 958.85 958.85 958.85 ZT20-23 970.65 970.65 970.65