condition mean min max ZT0-3 656.087012 656.087012 656.087012 ZT4-7 760.4243644999999 760.4243644999999 760.4243644999999 ZT8-11 810.542877 810.542877 810.542877 ZT12-15 806.1358319999999 806.1358319999999 806.1358319999999 ZT16-19 665.156472 665.156472 665.156472 ZT20-23 701.456604 701.456604 701.456604