condition mean min max ZT0-3 28.45 28.45 28.45 ZT4-7 28.3 28.3 28.3 ZT8-11 23.05 23.05 23.05 ZT12-15 23.950000000000003 23.950000000000003 23.950000000000003 ZT16-19 27.05 27.05 27.05 ZT20-23 28.049999999999997 28.049999999999997 28.049999999999997