condition mean min max ZT0-3 55.9199 55.9199 55.9199 ZT4-7 42.612700000000004 42.612700000000004 42.612700000000004 ZT8-11 42.1725 42.1725 42.1725 ZT12-15 37.4815 37.4815 37.4815 ZT16-19 45.820750000000004 45.820750000000004 45.820750000000004 ZT20-23 60.3786 60.3786 60.3786