condition mean min max ZT0-3 229.95 229.95 229.95 ZT4-7 231.3 231.3 231.3 ZT8-11 190.8 190.8 190.8 ZT12-15 162.85 162.85 162.85 ZT16-19 182.05 182.05 182.05 ZT20-23 228.7 228.7 228.7