condition mean min max ZT0-3 471.05 471.05 471.05 ZT4-7 414.4 414.4 414.4 ZT8-11 512.35 512.35 512.35 ZT12-15 420.55 420.55 420.55 ZT16-19 408.29999999999995 408.29999999999995 408.29999999999995 ZT20-23 419.04999999999995 419.04999999999995 419.04999999999995