condition mean min max ZT0-3 752.9 752.9 752.9 ZT4-7 535.1 535.1 535.1 ZT8-11 679.95 679.95 679.95 ZT12-15 814.75 814.75 814.75 ZT16-19 647.35 647.35 647.35 ZT20-23 777.5999999999999 777.5999999999999 777.5999999999999