condition mean min max ZT0-3 1885.6 1885.6 1885.6 ZT4-7 1719.0 1719.0 1719.0 ZT8-11 1590.9499999999998 1590.9499999999998 1590.9499999999998 ZT12-15 1354.85 1354.85 1354.85 ZT16-19 1417.6999999999998 1417.6999999999998 1417.6999999999998 ZT20-23 1746.0 1746.0 1746.0