Absolute azimuth localization error |ε_θ|, as a function of (a) the listening condition COND (RE: real listening, V: HOA4 auralization), (b) the acoustic environment ROOM (R1, R2, R3), (c) the interaction COND × ROOM between listening condition on x-axis and acoustic environment in color, (d) the source distance DIST (D2 and D4), (e) the interaction COND × DIST between the listening condition on the x-axis and the source distance in color. Post-hoc results are indicated by stars: p < 0.05 (*), p < 0.01 (**), p < 0.001 (***).