The Mopra Southern Galactic Plane CO Survey - data release 4- complete survey

We present observations of the Mopra carbon monoxide (CO) survey of the Southern Galactic Plane, covering Galactic longitudes spanning l = 250° ( -110° ) to l = 355° ( -5° ), with a latitudinal coverage of at least |b|<1°, totalling an area of > 210 deg². These data have been taken at 0.6 arcmin spatial resolution and 0.1 km s^-1 spectral resolution, providing an unprecedented view of the molecular gas clouds of the Southern Galactic Plane in the 109-115 GHz J = 1-0 transitions of ¹²CO, ¹³CO, C ¹⁸O, and C ¹⁷).