During PSP's perihelion phase, one should rely on measurements of SPAN, but outside SPC is more reliable. This affects so far only SEP_Multi-Instrument-Plot.ipynb @ojsant. To make it easier for the user, we could add an option that obtains PSP's radial distance (e.g. via sunpy's get_horizons_coord) and shades the background when PSP is in a perihelion phase. Maybe the perihelion status information is also available within some dataset (e.g., as "status"); one could check this as a (faster) alternative to get_horizons_coord.
During PSP's perihelion phase, one should rely on measurements of SPAN, but outside SPC is more reliable. This affects so far only SEP_Multi-Instrument-Plot.ipynb @ojsant. To make it easier for the user, we could add an option that obtains PSP's radial distance (e.g. via sunpy's get_horizons_coord) and shades the background when PSP is in a perihelion phase. Maybe the perihelion status information is also available within some dataset (e.g., as "status"); one could check this as a (faster) alternative to get_horizons_coord.