condition mean min max ZT0-3 24.0 24.0 24.0 ZT4-7 30.7 30.7 30.7 ZT8-11 10.1 10.1 10.1 ZT12-15 28.65 28.65 28.65 ZT16-19 17.8 17.8 17.8 ZT20-23 24.299999999999997 24.299999999999997 24.299999999999997