condition mean min max ZT0-3 0.038525750000000004 0.038525750000000004 0.038525750000000004 ZT4-7 0.010576583333333334 0.010576583333333334 0.010576583333333334 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0051538 0.0051538 0.0051538 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0