condition mean min max ZT0-3 1730.30898 1730.30898 1730.30898 ZT4-7 1490.5609805 1490.5609805 1490.5609805 ZT8-11 1321.083446 1321.083446 1321.083446 ZT12-15 1322.911096 1322.911096 1322.911096 ZT16-19 1779.850294 1779.850294 1779.850294 ZT20-23 2229.5600505 2229.5600505 2229.5600505