I downloaded the cosmic ionprf secondary data, but not so understand the data content of the inside, in a data file, with height, latitude and longitude, azimuth, TEC and electron density profile, my understanding is that each level corresponds to a latitude and longitude and a TEC and electron density, but see a lot of papers on the use of a certain position in the electron density profile, I don't know to determine the location of electron density profile is how to extract, if have know about this aspect of friends, also the trouble to give directions, because is too confused,