condition mean min max ZT0-3 53.7 53.7 53.7 ZT4-7 44.9 44.9 44.9 ZT8-11 80.4 80.4 80.4 ZT12-15 83.05 83.05 83.05 ZT16-19 56.05 56.05 56.05 ZT20-23 78.44999999999999 78.44999999999999 78.44999999999999