Representation of the system. The dotted circle represents the NS orbit and the white circle the companion star. The red arrows represent the path that the emitting radiation transverses in its path to the observer. This path is different in length and wind density depending on the orbital phase in which the radiation was emitted, provided that the system has an inclination and eccentricity different from zero. The mass-loss rate and inclination could be inferred by the differences found within the N_H in three different orbital phases, corresponding to Orb 1-1, Orb 31-1, and Orb 32-1 (see Tables 5 for the N_H values and 3 for the orbital phases).