condition mean min max ZT0-3 924.9499999999999 924.9499999999999 924.9499999999999 ZT4-7 974.7 974.7 974.7 ZT8-11 749.55 749.55 749.55 ZT12-15 733.0999999999999 733.0999999999999 733.0999999999999 ZT16-19 798.85 798.85 798.85 ZT20-23 883.15 883.15 883.15