condition mean min max ZT0-3 386.29999999999995 386.29999999999995 386.29999999999995 ZT4-7 439.6 439.6 439.6 ZT8-11 451.70000000000005 451.70000000000005 451.70000000000005 ZT12-15 455.55 455.55 455.55 ZT16-19 377.25 377.25 377.25 ZT20-23 333.35 333.35 333.35