condition mean min max ZT0-3 0.005626583333333333 0.0 0.011253166666666667 ZT4-7 0.028848600000000002 0.028848600000000002 0.028848600000000002 ZT8-11 0.011158099999999999 0.011158099999999999 0.011158099999999999 ZT12-15 0.0069178125 0.0 0.013835625 ZT16-19 0.0132958 0.0 0.0265916 ZT20-23 0 0 0