(Left) The z ~ 1 star formation main sequence from Rodighiero et al. (2010) and the position of the GOODS-N sample with CO measurements and PACS/SPIRE photometry. Galaxies with new IRAM CO observations are shown as black circles while the red symbols are for galaxies with CO data from the literature (Frayer et al. 2008; Daddi et al. 2010; Carilli et al. 2010; Ivison et al. 2011). Among the red symbols, triangles stand for galaxies referred to SMGs. (Right) Distribution of distance from the star formation main sequence (Δlog (SSFR)_MS), for the galaxies with the new IRAM CO observations (dashed histogram), and the combined sample including galaxies CO measurements from the literature (open histogram). Bins of 0.25 dex in Δlog (SSFR)_MS are used.