Herschel data from the "Galactic Observations of Terahertz C+" (GOT Cplus) Open Time Key Program (KPOT_wlanger_1) are available here using spatial and visualization tools. GOT Cplus surveyed the Galactic Plane in the 158 micron (1.9 THz) fine structure transition of [CII] using Herschel's HIFI instrument. GOT Cplus is a sparse survey containing 454 lines of sight throughout the Galactic Disk, plus two position-velocity maps across the Galactic center.
If you use GOT Cplus data, please cite Langer et al. (2014)
and Pineda et al. (2013). The OTF (on-the-fly) position-velocity maps of the
Central Molecular Zone are described in Langer et al. (2017).