Best-fit model of 3C 84 compared to the data. Presented here from left to right are the data points (denoted with round blue markers) and models (denoted with dark orange crosses) of the visibility amplitudes, closure phases, and fractional polarisation as a function of the (u, v) distance. The combined (u, v) distance used in the middle panel is defined as the square root of the sum of squared lengths of all three baselines forming a triangle. Error bars in all panels indicate the 68% confidence level.