condition mean min max ZT0-3 484.04999999999995 484.04999999999995 484.04999999999995 ZT4-7 433.8 433.8 433.8 ZT8-11 362.35 362.35 362.35 ZT12-15 457.7 457.7 457.7 ZT16-19 615.5 615.5 615.5 ZT20-23 568.05 568.05 568.05