condition mean min max ZT0-3 0.6275283333333334 0.0 1.266125 ZT4-7 1.673725 1.673725 1.673725 ZT8-11 0.0 0.0 0.0 ZT12-15 0.6903619999999999 0.0 1.3807239999999998 ZT16-19 0.5477 0.5477 0.5477 ZT20-23 0.0 0.0 0.0