condition mean min max ZT0-3 0.6046958649999999 0.357318569 0.852073161 ZT4-7 0.65713218575 0.308765033 1.0054993385 ZT8-11 1.8578390599999999 1.4707814975 2.2448966224999998 ZT12-15 2.5324299100000003 2.135665766 2.9291940540000003 ZT16-19 1.0594787875 1.0271348715 1.0918227035 ZT20-23 0.92849751275 0.8326315795000001 1.024363446