condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.018757 0.018757 0.018757 ZT12-15 0.0 0.0 0.0 ZT16-19 0.018234 0.018234 0.018234 ZT20-23 0.0 0.0 0.0