condition mean min max ZT0-3 1420.95 1420.95 1420.95 ZT4-7 1777.5 1777.5 1777.5 ZT8-11 2029.0 2029.0 2029.0 ZT12-15 1741.1 1741.1 1741.1 ZT16-19 1692.6 1692.6 1692.6 ZT20-23 1377.85 1377.85 1377.85