condition mean min max ZT0-3 24.453400000000002 24.453400000000002 24.453400000000002 ZT4-7 11.694469999999999 11.694469999999999 11.694469999999999 ZT8-11 7.70754 7.70754 7.70754 ZT12-15 11.07958 11.07958 11.07958 ZT16-19 42.955349999999996 42.955349999999996 42.955349999999996 ZT20-23 40.11795 40.11795 40.11795