condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.17867999999999998 0.0 0.35735999999999996 ZT16-19 0.061357833333333334 0.0 0.12271566666666667 ZT20-23 0 0 0