condition mean min max ZT0-3 63.298649999999995 63.298649999999995 63.298649999999995 ZT4-7 53.151799999999994 53.151799999999994 53.151799999999994 ZT8-11 49.2061 49.2061 49.2061 ZT12-15 48.65505 48.65505 48.65505 ZT16-19 64.08585 64.08585 64.08585 ZT20-23 66.381 66.381 66.381