condition mean min max ZT0-3 0.011812596666666666 0.011812596666666666 0.011812596666666666 ZT4-7 0.0 0.0 0.0 ZT8-11 0.01029645 0.01029645 0.01029645 ZT12-15 0.0 0.0 0.0 ZT16-19 0.020583499999999998 0.020583499999999998 0.020583499999999998 ZT20-23 0.0 0.0 0.0