condition mean min max ZT0-3 1429.45821 1429.45821 1429.45821 ZT4-7 1224.5904305 1224.5904305 1224.5904305 ZT8-11 1762.2998455000002 1762.2998455000002 1762.2998455000002 ZT12-15 1386.4141915 1386.4141915 1386.4141915 ZT16-19 1585.319718 1585.319718 1585.319718 ZT20-23 1559.469789 1559.469789 1559.469789