condition mean min max ZT0-3 0.572187 0.4559045 0.6459815 ZT4-7 0.47244050000000004 0.47244050000000004 0.47244050000000004 ZT8-11 0.390649 0.390649 0.390649 ZT12-15 0.47408949999999994 0.4312795 0.5168995 ZT16-19 0.7284875 0.7284875 0.7284875 ZT20-23 0.76908 0.76908 0.76908