condition mean min max ZT0-3 437.35 437.35 437.35 ZT4-7 861.2 861.2 861.2 ZT8-11 579.5 579.5 579.5 ZT12-15 461.9 461.9 461.9 ZT16-19 430.5 430.5 430.5 ZT20-23 414.79999999999995 414.79999999999995 414.79999999999995