condition mean min max ZT0-3 2275.0 2275.0 2275.0 ZT4-7 1703.2 1703.2 1703.2 ZT8-11 2068.95 2068.95 2068.95 ZT12-15 1958.85 1958.85 1958.85 ZT16-19 1874.0 1874.0 1874.0 ZT20-23 2100.2 2100.2 2100.2