condition mean min max ZT0-3 94.6178 77.4911 111.7445 ZT4-7 47.355000000000004 47.355000000000004 47.355000000000004 ZT8-11 45.04985 45.04985 45.04985 ZT12-15 0 0 0 ZT16-19 59.68855 59.68855 59.68855 ZT20-23 60.88625 60.88625 60.88625