| Symbol | Mean Value | Definition |
| vsw | 438 km/s | solar-wind speed |
| |B| | 6.3 ´ 10−5 Gauss | magnetic-field strength |
| n | 6.8 cm−3 | proton number density |
| Tp | 1.1 ´ 105 K | proton temperature |
| M | 5.9 | magnetosonic Mach number |