condition mean min max ZT0-3 179.1605 179.1605 179.1605 ZT4-7 161.9835 161.9835 161.9835 ZT8-11 184.57049999999998 184.57049999999998 184.57049999999998 ZT12-15 199.627 199.627 199.627 ZT16-19 208.7425 208.7425 208.7425 ZT20-23 146.313 146.313 146.313