condition mean min max ZT0-3 54.1763 54.1763 54.1763 ZT4-7 48.02435 48.02435 48.02435 ZT8-11 26.59535 26.59535 26.59535 ZT12-15 33.214650000000006 33.214650000000006 33.214650000000006 ZT16-19 44.2965 44.2965 44.2965 ZT20-23 51.1024 51.1024 51.1024