Predicted intensities for the SO₂ lines of Table 4. The assumed kinetic temperature and Δv= are 10 K and 1 km s^-1, respectively. Units for the density and T_B are cm^-3 and Kelvin, respectively. Black thin lines correspond to the predictions for the SO₂/o-H₂ system (this work), red thick lines to the SO₂/p-H₂ system (this work), and blue dotted lines to SO₂-He (rates from Green 1995; extrapolated down to 10 K as indicated in the text).