Top: gas mass estimates from H.E.S.S. Collaboration (2016) in grey and from this work in orange. Middle: fraction of disk contamination in the total hydrogen column density. Bottom: average CR density as a function of its projected distance from Sgr A*. The grey items are adapted from H.E.S.S. Collaboration (2016), including the systematic uncertainties associated to the choice of gas tracer, and the correction we discuss in the footnote 5. The grey line is the 1/r profile in CR density integrated over the line of sight provided in their paper as a fit to the data points. The orange error bars give the values derived from our mass estimates. The orange line corresponds to the fit to these points considering a 1/r profile for the CMZ component (magenta) and a constant for the disk component (yellow).