condition mean min max ZT0-3 35.3405 25.7131 41.129149999999996 ZT4-7 20.56585 20.56585 20.56585 ZT8-11 22.59985 22.59985 22.59985 ZT12-15 29.032325 28.142899999999997 29.921750000000003 ZT16-19 33.7518 33.7518 33.7518 ZT20-23 45.6495 45.6495 45.6495