condition mean min max ZT0-3 477.55 477.55 477.55 ZT4-7 484.8 484.8 484.8 ZT8-11 598.3 598.3 598.3 ZT12-15 1067.6000000000001 1067.6000000000001 1067.6000000000001 ZT16-19 1322.15 1322.15 1322.15 ZT20-23 559.4000000000001 559.4000000000001 559.4000000000001