RINEX_HO requires adoi:10.1007/s10291-011-0220-1H.A.MarquesJ.F.G.MonicoM.AquinoSpringer-VerlagGPS SolutionsMarques, H. A., Monico, J. F. G., and Aquino, M.: RINEX HO: second- and third-order ionospheric corrections for RINEX observation files, GPS Solut., 15(3), 305-314, doi:...