condition mean min max ZT0-3 149.95 149.95 149.95 ZT4-7 231.7 231.7 231.7 ZT8-11 181.55 181.55 181.55 ZT12-15 264.29999999999995 264.29999999999995 264.29999999999995 ZT16-19 202.35 202.35 202.35 ZT20-23 201.25 201.25 201.25