condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.008723557666666666 0.0 0.017447115333333332 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0154079405 0.0 0.030815881 ZT20-23 0.0 0.0 0.0