Grace is a WYSIWYG 2D plotting tool for the X Window System and M*tif. Grace runs on practically any version of Unix-like OS. It can read text and netCDF files and output in several formats including PDF.
Grace is a descendant of ACE/gr, also known as Xmgr.
module load xmgr xmgrace or xmgrace data_file.dat
See the official website: XMGrace