Comparison of the synthesized (left) and inverted (middle) maps of the LP (upper row) and CP (lower row) according to scheme G. For both LP and CP the synthesized and inverted parameters are plotted against each other with the colour scale on a log₁₀ scale (right). LP and CP, defined in Eqs. (4) and (5), respectively, are computed by integrating across the 15 648.52 Å line. The solid, green line indicates the exact linear relationship. The dashed, green ellipse indicates the 99% confidence level.