condition mean min max ZT0-3 299.61614 299.61614 299.61614 ZT4-7 300.299536 300.299536 300.299536 ZT8-11 390.17729399999996 390.17729399999996 390.17729399999996 ZT12-15 413.87947299999996 413.87947299999996 413.87947299999996 ZT16-19 377.652928 377.652928 377.652928 ZT20-23 401.7637985 401.7637985 401.7637985