| Number (In Section 4, octet 11) |
Parameter | Units |
Abbrev |
|---|---|---|---|
| 0 | Particle Number Density | m-3 | PLSMDEN |
| 1 | Electron Density | m-3 | ELCDEN |
| 2 | Proton Density | m-3 | PROTDEN |
| 3 | Ion Density | m-3 | IONDEN |
| 4 | Vertical Total Electron Content | TECU | VTEC |
| 5 | HF Absorption Frequency | Hz | ABSFRQ |
| 6 | HF Absorption | dB | ABSRB |
| 7 | Spread F | m | SPRDF |
| 8 | h'F | m | HPRIMF |
| 9 | Critical Frequency | Hz | CRTFRQ |
| 10 | Maximal Usable Frequency (MUF) | Hz | MAXUFZ |
| 11 | Peak Height (hm) | m | PEAKH |
| 12 | Peak Density | m-3 | PEAKDEN |
| 13 | Equivalent Slab Thickness (τ) | km | EQSLABT |
| 14-191 | Reserved | ||
| 192-254 | Reserved for Local Use | ||
| 255 |
Missing |