condition mean min max ZT0-3 46.099999999999994 46.099999999999994 46.099999999999994 ZT4-7 103.8 103.8 103.8 ZT8-11 71.95 71.95 71.95 ZT12-15 66.0 66.0 66.0 ZT16-19 103.65 103.65 103.65 ZT20-23 46.849999999999994 46.849999999999994 46.849999999999994