  We present the full data release of 12CO (3-2) High-Resolution Survey
(COHRS), which has mapped the inner Galactic plane over the range of
9.5$^{\circ}$ $\le$ l $\le$ 62.3$^{\circ}$ and $|b| \le 0.5^{\circ}$. The COHRS
has been carried out using the Heterodyne Array Receiver Program (HARP) on the
15 m James Clerk Maxwell Telescope (JCMT) in Hawaii. The released data are
smoothed to have a spatial resolution of 16.6 arcsec and a velocity resolution
of 0.635 km/s, achieving a mean root-mean-square of $\sim 0.6$ K on
$T_\mathrm{A}^*$. The COHRS data are useful for investigating detailed
three-dimensional structures of individual molecular clouds and large-scale
structures such as spiral arms in the Galactic plane. Furthermore, data from
other available public surveys of different CO isotopologues and transitions
with similar angular resolutions to this survey, such as FUGIN, SEDIGISM, and
CHIMPS/CHIMPS2, allow studying the physical properties of molecular clouds and
comparing their states with each other. In this paper, we report further
observations on R2 and improved data reduction since the original COHRS
release. We discuss the characteristics of the COHRS data and present
integrated-emission images and a position-velocity (PV) map of the region
covered. The PV map shows a good match with the spiral-arm traces from the
existing CO and HI surveys. We also obtain and compare integrated
one-dimensional distributions of 12CO (1-0) and (3-2) and those of star-forming
populations to each other.
