condition mean min max ZT0-3 1000.8 1000.8 1000.8 ZT4-7 760.4 760.4 760.4 ZT8-11 655.9 655.9 655.9 ZT12-15 590.25 590.25 590.25 ZT16-19 652.8499999999999 652.8499999999999 652.8499999999999 ZT20-23 977.4 977.4 977.4