condition mean min max ZT0-3 0.37133425 0.3566855 0.38598299999999997 ZT4-7 0.566775 0.566775 0.566775 ZT8-11 0.995172 0.995172 0.995172 ZT12-15 0 0 0 ZT16-19 0.981067 0.981067 0.981067 ZT20-23 0.634014 0.634014 0.634014