condition mean min max ZT0-3 69.968431 69.968431 69.968431 ZT4-7 45.392327 45.392327 45.392327 ZT8-11 54.3609125 54.3609125 54.3609125 ZT12-15 59.496955 59.496955 59.496955 ZT16-19 94.6106955 94.6106955 94.6106955 ZT20-23 90.1986785 90.1986785 90.1986785