condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0295928 0.0295928 0.0295928 ZT12-15 0.0208997 0.01641685 0.02538255 ZT16-19 0.0286916 0.0286916 0.0286916 ZT20-23 0.0 0.0 0.0