condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 1.0062104572500001 0.1252030585 1.8872178560000001 ZT8-11 12.489046045 11.355961583500001 13.6221305065 ZT12-15 14.65737850125 14.5532140925 14.76154291 ZT16-19 2.6592131695 2.1549598894999997 3.1634664495 ZT20-23 1.2760332717499998 1.2475868659999998 1.3044796774999998