condition mean min max ZT0-3 0.09888563199999999 0.0 0.19777126399999997 ZT4-7 0.1873436275 0.1445349065 0.23015234850000002 ZT8-11 0.0 0.0 0.0 ZT12-15 0.24551605024999998 0.22411590399999998 0.2669161965 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0