condition mean min max ZT0-3 99.15 99.15 99.15 ZT4-7 80.4 80.4 80.4 ZT8-11 84.15 84.15 84.15 ZT12-15 314.8 314.8 314.8 ZT16-19 276.29999999999995 276.29999999999995 276.29999999999995 ZT20-23 81.2 81.2 81.2