condition mean min max ZT0-3 77.60045 77.60045 77.60045 ZT4-7 53.377700000000004 53.377700000000004 53.377700000000004 ZT8-11 46.5888 46.5888 46.5888 ZT12-15 67.97534999999999 67.97534999999999 67.97534999999999 ZT16-19 86.94614999999999 86.94614999999999 86.94614999999999 ZT20-23 93.63935000000001 93.63935000000001 93.63935000000001