condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.4318375 0.4318375 0.4318375 ZT12-15 0.393797 0.393797 0.393797 ZT16-19 1.0375685 1.0375685 1.0375685 ZT20-23 0.172487 0.172487 0.172487