condition mean min max ZT0-3 987.8 987.8 987.8 ZT4-7 652.8 652.8 652.8 ZT8-11 595.5999999999999 595.5999999999999 595.5999999999999 ZT12-15 601.3 601.3 601.3 ZT16-19 897.8499999999999 897.8499999999999 897.8499999999999 ZT20-23 1048.0 1048.0 1048.0