condition mean min max ZT0-3 0.08926683333333334 0.0 0.17853366666666667 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.27860850000000004 0.0 0.5572170000000001 ZT20-23 0 0 0