condition mean min max ZT0-3 432.66700000000003 432.66700000000003 432.66700000000003 ZT4-7 356.28200000000004 356.28200000000004 356.28200000000004 ZT8-11 381.78049999999996 381.78049999999996 381.78049999999996 ZT12-15 303.9185 303.9185 303.9185 ZT16-19 459.2125 459.2125 459.2125 ZT20-23 441.842 441.842 441.842