Table4.2.4.2
Charged Particle Mass and Number https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table4-2-4-2.shtml PLSMDEN Particle Number Density m-3 ELCDEN Electron Density m-3 PROTDEN Proton Density m-3 IONDEN Ion Density m-3 VTEC Vertical Electron Content m-2 ABSFRQ HF Absorption Frequency Hz ABSRB HF Absorption dB SPRDF Spread F m HPRIMF h'F m CRTFRQ Critical Frequency Hz SCINT Scintillation Numeric