Inferred calibration biases. This figure shows our inference of the calibration bias, δ, defined in Sect. 3.2.2 of G18, for each of the photometric filters in Table 1. Each instrument is color-coded. The vertical dashed error bars represent the calibration prior, that is the ±1σ range given in Appendix A. The violin plots show the actual posterior PDFs of δ, for each broadband. The width of a single violin plot is proportional to the PDF as a function of δ (vertical axis).