condition mean min max ZT0-3 98.85 98.85 98.85 ZT4-7 51.5 51.5 51.5 ZT8-11 130.85 130.85 130.85 ZT12-15 228.85 228.85 228.85 ZT16-19 240.1 240.1 240.1 ZT20-23 167.85 167.85 167.85