condition mean min max ZT0-3 0.0222977405 0.0 0.044595481 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0603156835 0.0361121915 0.0845191755 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0