The solar cycle signal in the ozone profile, ΔO₃(z), in the equatorial stratosphere: (i) derived from observations, (dashed black curves) Austin et al. (2008) and (solid black) AURA/MLS; (ii) derived using various solar spectra as input to the HP model: (solid blue) SATIRE-S, (red) NRLSSI and (green) SORCE/SOLSTICE (using SATIRE-S above 290 nm) and (iii) constructed from the (dashed) linear approximation with the SC flux changes given in Table 1.