condition mean min max ZT0-3 89.0013 89.0013 89.0013 ZT4-7 28.12755 28.12755 28.12755 ZT8-11 54.63665 54.63665 54.63665 ZT12-15 169.37099999999998 169.37099999999998 169.37099999999998 ZT16-19 290.57050000000004 290.57050000000004 290.57050000000004 ZT20-23 245.639 245.639 245.639