condition mean min max ZT0-3 45.220150000000004 45.220150000000004 45.220150000000004 ZT4-7 47.13765 47.13765 47.13765 ZT8-11 30.51645 30.51645 30.51645 ZT12-15 25.87905 25.87905 25.87905 ZT16-19 32.932500000000005 32.932500000000005 32.932500000000005 ZT20-23 39.2359 39.2359 39.2359