condition mean min max ZT0-3 78.16541666666666 49.22755 126.2875 ZT4-7 206.95850000000002 206.95850000000002 206.95850000000002 ZT8-11 138.899 138.899 138.899 ZT12-15 145.167 141.988 148.346 ZT16-19 101.6472 101.6472 101.6472 ZT20-23 69.09755 69.09755 69.09755