Rotational diagrams of CO for G12.81−0.2 and G351.25+0.7, which are based on the observations of full profile CO transitions with J_u of 11, 13, and 16. The natural logarithm of the number of emitting molecules from a level u, 𝒩_u (dimensionless), divided by the degeneracy of the level, g_u, is shown as a function of the upper level energy, E_u /k_B, in Kelvins. Detections are shown as blue circles. Dashed orange lines show linear regression fits to the data; the resulting rotational temperatures are provided in the plots with the associated errors from the fit.