Geometric albedo (A_g) estimated as a function of the day-side temperature for the measured occultation depth $({\delta }_{\mathrm{e}\mathrm{c}\mathrm{l}}={6.95}_{-0.64}^{+0.66}\mathrm{p}\mathrm{p}\mathrm{m})$. The cyan lines represent the 1σ uncertainty curves. The dash-dotted and dashed lines represent the variation of A_g with varying T_d for the 2 heat re-circulation cases (ε) considered, computed at d = d_sec = 14.83 ± 0.30 R_⋆ (that is, during the occultation). The 2 orange shaded regions correspond to the intersection of the curves, identifying the average HAT-P-11 b day-side temperatures for the 2 extreme scenarios of ε, computed at d = d_sec. These 2 values of the equilibrium temperature with the associated uncertainties are reported in the legend.