Growth curve of f(Hα) normalized to f(Hα) at 2.5R₅₀, x(α,2p5), as a function of the radius of the aperture. Bold red (blue) lines correspond to the median values for galaxies with b/a > 0.4 (b/a < 0.4). Dashed red and blue lines correspond to 1σ deviations from the median curve. Numbers indicate the size of each subsample. The vertical dashed line corresponds to 0.3R₅₀, which on average corresponds to the FWHM of the CALIFA psf for our sample.