condition mean min max ZT0-3 141.854071 141.854071 141.854071 ZT4-7 432.42884300000003 432.42884300000003 432.42884300000003 ZT8-11 547.547053 547.547053 547.547053 ZT12-15 286.46592 286.46592 286.46592 ZT16-19 185.0527835 185.0527835 185.0527835 ZT20-23 134.54839099999998 134.54839099999998 134.54839099999998