condition mean min max ZT0-3 83.77465000000001 83.77465000000001 83.77465000000001 ZT4-7 68.09365 68.09365 68.09365 ZT8-11 48.15155 48.15155 48.15155 ZT12-15 43.1475 43.1475 43.1475 ZT16-19 65.79505 65.79505 65.79505 ZT20-23 75.23535 75.23535 75.23535