condition mean min max ZT0-3 7726.85 7726.85 7726.85 ZT4-7 8683.8 8683.8 8683.8 ZT8-11 9981.35 9981.35 9981.35 ZT12-15 9932.65 9932.65 9932.65 ZT16-19 11134.599999999999 11134.599999999999 11134.599999999999 ZT20-23 9325.7 9325.7 9325.7