condition mean min max ZT0-3 402.05 402.05 402.05 ZT4-7 138.1 138.1 138.1 ZT8-11 169.2 169.2 169.2 ZT12-15 311.25 311.25 311.25 ZT16-19 340.29999999999995 340.29999999999995 340.29999999999995 ZT20-23 392.5 392.5 392.5