condition mean min max ZT0-3 310.70000000000005 310.70000000000005 310.70000000000005 ZT4-7 337.7 337.7 337.7 ZT8-11 434.95 434.95 434.95 ZT12-15 440.6 440.6 440.6 ZT16-19 373.0 373.0 373.0 ZT20-23 290.45 290.45 290.45