condition mean min max ZT0-3 0.2454996403333333 0.0 0.4909992806666666 ZT4-7 0.13767691399999998 0.0 0.27535382799999997 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0