Photosaturation current estimates during the cometary mission from the cross-calibration of ion current to MIP (purple dots) with an associated error bar from the fit of less than five percent; three different photosaturation current estimates are as described in Johansson et al. (2017), where blue and yellow are two out of three independent estimates from LAP with associated error bars; and the black line is a (flare-removed) photosaturation estimate as measured from an EUV monitor at Mars orbit. Also plotted is a low-pass (1/f < 9.5 days) filtered profile of all photosaturation estimates from LAP (red line).