condition mean min max ZT0-3 6.34265277175 4.1953825535 8.48992299 ZT4-7 3.420580633 3.3589454365 3.4822158295000003 ZT8-11 4.46784152425 3.4642698585 5.47141319 ZT12-15 5.01441769375 4.689422269 5.3394131185 ZT16-19 3.25514565325 3.0180404100000002 3.4922508965 ZT20-23 6.13968407775 5.312370547 6.9669976085