Appendix 2—figure 4. $S_{\text{curl}}$ reconstruction error landscape (log scale) as a function of $l_{\text{max}}$ and $n_{\text{max}}$.

Black contour lines indicate iso-error lines (see Equation 37, $E_{\text{curl}}=$ const.), whereas white contour lines indicate iso-compression levels (see Equation 35, $C=$ const.). Orange circle indicates the final value used for our analysis.