condition mean min max ZT0-3 1083.001288 1083.001288 1083.001288 ZT4-7 1691.5106275 1691.5106275 1691.5106275 ZT8-11 1602.4419145000002 1602.4419145000002 1602.4419145000002 ZT12-15 1592.571414 1592.571414 1592.571414 ZT16-19 1278.942693 1278.942693 1278.942693 ZT20-23 1526.0748785 1526.0748785 1526.0748785