We represent here the azimuthal oscillations of the SFR and the ²⁶Al mass as a function of azimuth. Panel a: SFR as function of azimuth at present time and solar neighbourhood. Here, we represent half of the azimuths since all the quantities are periodic. The black dashed lines, in this plot and in those below, mark the peaks of the SFR. Panel b: ²⁶Al distribution in solar ring and present time. In pink, we show ²⁶Al predicted by Model 1, and in green we show that from Model 2. Panel c: difference between ²⁶Al production in the two cases. Panel d: Novae distribution in solar ring at present time.