condition mean min max ZT0-3 33.596675 30.5633 36.63005 ZT4-7 23.436999999999998 23.436999999999998 23.436999999999998 ZT8-11 24.622700000000002 24.622700000000002 24.622700000000002 ZT12-15 0 0 0 ZT16-19 30.9994 30.9994 30.9994 ZT20-23 35.853899999999996 35.853899999999996 35.853899999999996