condition mean min max ZT0-3 59.599999999999994 59.599999999999994 59.599999999999994 ZT4-7 70.4 70.4 70.4 ZT8-11 113.44999999999999 113.44999999999999 113.44999999999999 ZT12-15 107.15 107.15 107.15 ZT16-19 109.6 109.6 109.6 ZT20-23 92.2 92.2 92.2