condition mean min max ZT0-3 678.5999999999999 678.5999999999999 678.5999999999999 ZT4-7 436.8 436.8 436.8 ZT8-11 460.70000000000005 460.70000000000005 460.70000000000005 ZT12-15 483.0 483.0 483.0 ZT16-19 633.85 633.85 633.85 ZT20-23 671.8 671.8 671.8