(a) The termination shock and the flow lines in the heliosheath assuming a varying shock compression ratio as a function of θ angle. The ﹩{r}_{h}﹩(θ = 0°) − rs(θ = 0°) length is set to 37.6 AU and the compression ratio for θ = 0° is set to R(θ = 0°) = 15. (b) The compression ratio of the termination shock as a function of θ.