Location of our sources in the HR diagram, compared to evolutionary tracks from Ekström et al. (2012) for masses of 3 M_⊙, 4 M_⊙, 5 M_⊙, 7 M_⊙, 9 M_⊙, 12 M_⊙, 15 M_⊙, 20 M_⊙, 25 M_⊙, 32 M_⊙, and 40 M_⊙. The solid lines indicate models without rotation, and the dashed lines with rotation. Also shown are previously measured sources as listed in the main text. In blue are the RSG stars, and in red the red giants.