condition mean min max ZT0-3 132.55 132.55 132.55 ZT4-7 103.4 103.4 103.4 ZT8-11 94.25 94.25 94.25 ZT12-15 135.5 135.5 135.5 ZT16-19 162.2 162.2 162.2 ZT20-23 138.85000000000002 138.85000000000002 138.85000000000002