condition mean min max ZT0-3 658.8625 658.8625 658.8625 ZT4-7 593.8820000000001 593.8820000000001 593.8820000000001 ZT8-11 472.808 472.808 472.808 ZT12-15 457.0615 457.0615 457.0615 ZT16-19 573.4295 573.4295 573.4295 ZT20-23 647.0440000000001 647.0440000000001 647.0440000000001