condition mean min max ZT0-3 5466.700000000001 5466.700000000001 5466.700000000001 ZT4-7 2201.5 2201.5 2201.5 ZT8-11 2686.7 2686.7 2686.7 ZT12-15 3135.0 3135.0 3135.0 ZT16-19 3637.1 3637.1 3637.1 ZT20-23 4891.75 4891.75 4891.75