Non-thermal contribution to the velocity dispersions, divided by the isothermal sound speed at the temperature of the NH₃ gas of 12.7 K i.e. the Mach number. The red histogram is the north-west filament, blue is the north-east, green is the north while grey is the south-east. The vertical dashed line denotes the transition from subsonic to supersonic motions. Overplotted in white in each panel is the Mach number of the core regions only from the combined data. The overplotted black line is the distribution of the JVLA-only velocity dispersion results.