condition mean min max ZT0-3 557.87748 557.87748 557.87748 ZT4-7 606.8905775000001 606.8905775000001 606.8905775000001 ZT8-11 777.775284 777.775284 777.775284 ZT12-15 699.0841869999999 699.0841869999999 699.0841869999999 ZT16-19 413.14002300000004 413.14002300000004 413.14002300000004 ZT20-23 133.15202 133.15202 133.15202