Figure 3: Correlation of spectral features and distance from vortex-core centre.

The conductance ratio σ_SGS/σ_SC evaluated along the white arrow of Fig. 2a provides a measure of the distance d from the vortex centre. We find a strong correlation between this distance and (a) the zero-bias conductance and (b) the conductance at Δ_SC, but not with (c) the amplitude of the subgap states. The colour plots are histograms showing the frequency of each pair of values on the same area as in Fig. 2a (white–grey: low; red–yellow: high). The circles and error bars indicate the average and the standard deviation of the distributions at fixed values of the conductance ratio.