condition mean min max ZT0-3 118.539749 118.539749 118.539749 ZT4-7 111.80221549999999 111.80221549999999 111.80221549999999 ZT8-11 133.47805499999998 133.47805499999998 133.47805499999998 ZT12-15 148.104079 148.104079 148.104079 ZT16-19 176.3822965 176.3822965 176.3822965 ZT20-23 183.721134 183.721134 183.721134