condition mean min max ZT0-3 25.308519 25.308519 25.308519 ZT4-7 24.899313 24.899313 24.899313 ZT8-11 28.203622000000003 28.203622000000003 28.203622000000003 ZT12-15 24.874947 24.874947 24.874947 ZT16-19 27.0479365 27.0479365 27.0479365 ZT20-23 24.2574895 24.2574895 24.2574895