condition mean min max ZT0-3 379.955 379.955 379.955 ZT4-7 131.6125 131.6125 131.6125 ZT8-11 510.307 510.307 510.307 ZT12-15 963.014 963.014 963.014 ZT16-19 896.218 896.218 896.218 ZT20-23 814.287 814.287 814.287