condition mean min max ZT0-3 54.911699999999996 54.911699999999996 54.911699999999996 ZT4-7 44.90255 44.90255 44.90255 ZT8-11 36.7194 36.7194 36.7194 ZT12-15 40.7986 40.7986 40.7986 ZT16-19 53.81595 53.81595 53.81595 ZT20-23 53.90095 53.90095 53.90095