Absolute percentage error of the neural posterior density estimate for a single star. Different coloured histograms show the full error distribution for all six parameters of interest with the median values highlighted by the vertical dashed lines. The box plots show again the first and third quantiles with the median represented by a vertical line and the whiskers extending from the box to the farthest data point lying within 1.5× the inter-quartile range from the box. The global parameters of main interest for this work are shown by the light blue and red histogram.