condition mean min max ZT0-3 7456.55 7456.55 7456.55 ZT4-7 5475.6 5475.6 5475.6 ZT8-11 6856.35 6856.35 6856.35 ZT12-15 6255.8 6255.8 6255.8 ZT16-19 6964.799999999999 6964.799999999999 6964.799999999999 ZT20-23 7082.8 7082.8 7082.8