Fraction of binaries with q > 0.5 as a function of the radial distance from the cluster center for 29 GCs. The dotted and dashed vertical lines mark the core and the half mass radius respectively. Black filled-circles show binary fractions in four radial intervals while red open-symbols indicate the binary fraction for the r_C, r_C − HM, and r_oHM sample. Horizontal black segments indicate the radial coverage corresponding to each point while observational errors are plotted as vertical lines and shadowed areas.