condition mean min max ZT0-3 7579.200000000001 7579.200000000001 7579.200000000001 ZT4-7 7448.0 7448.0 7448.0 ZT8-11 6714.95 6714.95 6714.95 ZT12-15 5753.75 5753.75 5753.75 ZT16-19 5818.65 5818.65 5818.65 ZT20-23 6828.85 6828.85 6828.85