condition mean min max ZT0-3 0.6042590000000001 0.6042590000000001 0.6042590000000001 ZT4-7 0.46017600000000003 0.46017600000000003 0.46017600000000003 ZT8-11 0.5368655 0.5368655 0.5368655 ZT12-15 0.7831414999999999 0.7831414999999999 0.7831414999999999 ZT16-19 0.8319835 0.8319835 0.8319835 ZT20-23 0.7648995000000001 0.7648995000000001 0.7648995000000001