condition mean min max ZT0-3 85.8 85.8 85.8 ZT4-7 162.3 162.3 162.3 ZT8-11 156.55 156.55 156.55 ZT12-15 87.9 87.9 87.9 ZT16-19 71.6 71.6 71.6 ZT20-23 52.349999999999994 52.349999999999994 52.349999999999994