condition mean min max ZT0-3 55.34780833333333 55.34780833333333 55.34780833333333 ZT4-7 52.87595 52.87595 52.87595 ZT8-11 61.1686 61.1686 61.1686 ZT12-15 60.4823 60.4823 60.4823 ZT16-19 59.999825 59.999825 59.999825 ZT20-23 55.186625 55.186625 55.186625