Top: SFR as a function of stellar mass for MaNGA galaxies. The grey dots show individual MaNGA galaxies, with contours enclosing 20%, 40%, 60%, and 80% of the data points. The solid line shows the SFMS obtained from Sánchez et al. (2019). Bottom: distribution of Δ_SFMS for MaNGA galaxies. The orange histogram shows the entire sample, and the blue and red lines show the possible distribution of star-forming and passive galaxies obtained by fitting a Gaussian function to the histogram with −0.5 < Δ_SFMS and Δ_SFMS < −2.5, respectively. The green histogram shows the possible distribution of green valley galaxies by subtracting the contribution of star-forming and passive galaxies from the whole distribution. In both panels, the shaded region indicates the green valley we used, defined as the region of −1.3 < Δ_SFMS < −0.5.