condition mean min max ZT0-3 36.7062 23.720100000000002 49.6923 ZT4-7 72.75825 72.75825 72.75825 ZT8-11 62.243700000000004 62.243700000000004 62.243700000000004 ZT12-15 0 0 0 ZT16-19 73.5978 73.5978 73.5978 ZT20-23 74.54835 74.54835 74.54835