condition mean min max ZT0-3 1896.55 1896.55 1896.55 ZT4-7 1830.8 1830.8 1830.8 ZT8-11 1951.5 1951.5 1951.5 ZT12-15 1684.05 1684.05 1684.05 ZT16-19 2009.0500000000002 2009.0500000000002 2009.0500000000002 ZT20-23 2084.25 2084.25 2084.25