condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.1883396161666667 0.0 0.3766792323333334 ZT12-15 0.0 0.0 0.0 ZT16-19 0.219565758 0.0 0.439131516 ZT20-23 0.0 0.0 0.0