Relative information loss ΔI/I is plotted for all distance elements [d]i,j., assuming prior knowledge [d]i,j. Reference [d]i,j: (1,11) for a and d; (1,16) for b and e; (4,13) for c and f. For a–c, the absolute information loss is plotted, equal to {[I(i,j) + I(i′,j′)] − [I(i,j;i′,j′)]}/[I(i,j;i′,j′)]. In d–f, the decimal logarithm of the information loss is plotted.