condition mean min max ZT0-3 29.02035 29.02035 29.02035 ZT4-7 23.33795 23.33795 23.33795 ZT8-11 25.494500000000002 25.494500000000002 25.494500000000002 ZT12-15 34.2427 34.2427 34.2427 ZT16-19 45.4771 45.4771 45.4771 ZT20-23 41.85795 41.85795 41.85795