condition mean min max ZT0-3 42.6816 42.6816 42.6816 ZT4-7 24.983 24.983 24.983 ZT8-11 44.99594999999999 44.99594999999999 44.99594999999999 ZT12-15 67.1532 67.1532 67.1532 ZT16-19 82.38295 82.38295 82.38295 ZT20-23 62.2161 62.2161 62.2161