condition mean min max ZT0-3 0.22098166666666666 0.139907 0.3785075 ZT4-7 0.0 0.0 0.0 ZT8-11 0.3224676 0.3224676 0.3224676 ZT12-15 0.39355775000000004 0.29423 0.49288550000000003 ZT16-19 0.396875 0.396875 0.396875 ZT20-23 0.3937165 0.3937165 0.3937165