condition mean min max ZT0-3 246.85000000000002 246.85000000000002 246.85000000000002 ZT4-7 528.5 528.5 528.5 ZT8-11 658.9 658.9 658.9 ZT12-15 828.45 828.45 828.45 ZT16-19 590.8 590.8 590.8 ZT20-23 287.85 287.85 287.85