condition mean min max ZT0-3 484.04999999999995 484.04999999999995 484.04999999999995 ZT4-7 818.8 818.8 818.8 ZT8-11 673.45 673.45 673.45 ZT12-15 591.75 591.75 591.75 ZT16-19 407.0 407.0 407.0 ZT20-23 324.75 324.75 324.75