condition mean min max ZT0-3 621.482109 621.482109 621.482109 ZT4-7 622.7598255 622.7598255 622.7598255 ZT8-11 543.98102 543.98102 543.98102 ZT12-15 689.032188 689.032188 689.032188 ZT16-19 625.1524835 625.1524835 625.1524835 ZT20-23 627.828906 627.828906 627.828906