condition mean min max ZT0-3 1702.3609 1702.3609 1702.3609 ZT4-7 1835.856394 1835.856394 1835.856394 ZT8-11 2009.4088860000002 2009.4088860000002 2009.4088860000002 ZT12-15 1813.2030264999999 1813.2030264999999 1813.2030264999999 ZT16-19 1630.635413 1630.635413 1630.635413 ZT20-23 1641.3767885 1641.3767885 1641.3767885