condition mean min max ZT0-3 48.92375 48.7348 49.112700000000004 ZT4-7 36.5937 36.5937 36.5937 ZT8-11 44.01905 44.01905 44.01905 ZT12-15 0 0 0 ZT16-19 49.811949999999996 49.811949999999996 49.811949999999996 ZT20-23 44.4659 44.4659 44.4659