condition mean min max ZT0-3 130.637358875 118.54004655 142.73467119999998 ZT4-7 109.6644265225 107.21631329499999 112.11253975 ZT8-11 137.03058364999998 124.90285674999998 149.15831054999998 ZT12-15 137.985400325 124.27718389999998 151.69361675 ZT16-19 185.82740367500003 185.6361879 186.01861945000002 ZT20-23 159.22277277499998 157.4385087 161.00703684999996