condition mean min max ZT0-3 0.36157649999999997 0.36157649999999997 0.36157649999999997 ZT4-7 0.1003021 0.1003021 0.1003021 ZT8-11 0.0 0.0 0.0 ZT12-15 0.01422575 0.01422575 0.01422575 ZT16-19 0.187768 0.187768 0.187768 ZT20-23 0.19862449999999998 0.19862449999999998 0.19862449999999998