Same as Fig. A.1, but for H₂ colliding with H₂. The circles, squares, triangles and diamonds denote the overall cooling rate coefficients from a given v,J level to the ground state based on the state-to-state rates from Flower & Roueff (1998). The orange and blue stars show the v,J = 1,0, 1,2 and 2,0 vibration-vibration rates of Fonseca dos Santos et al. (2013). The lilac triangles and dashed curve show the VV rates of Ahn et al. (2007). The gray star marks the adopted rate for our v^* = 6 pseudo-level; as indicated by the arrow, this is the rate that the v = 1, 2 and 3 series from Flower & Roueff converge to in the high-J limit.