condition mean min max ZT0-3 294.145 294.145 294.145 ZT4-7 260.021 260.021 260.021 ZT8-11 243.456 243.456 243.456 ZT12-15 234.7515 234.7515 234.7515 ZT16-19 303.803 303.803 303.803 ZT20-23 399.254 399.254 399.254