condition mean min max ZT0-3 67.1 67.1 67.1 ZT4-7 65.5 65.5 65.5 ZT8-11 72.4 72.4 72.4 ZT12-15 62.849999999999994 62.849999999999994 62.849999999999994 ZT16-19 92.0 92.0 92.0 ZT20-23 64.0 64.0 64.0