condition mean min max ZT0-3 1359.1999999999998 1359.1999999999998 1359.1999999999998 ZT4-7 798.2 798.2 798.2 ZT8-11 1231.35 1231.35 1231.35 ZT12-15 1224.35 1224.35 1224.35 ZT16-19 1132.75 1132.75 1132.75 ZT20-23 849.25 849.25 849.25