PVO VENUS ELECT TEMP PROBE DERVD IONOPAUSE LOCATION VER 1.0
The Ionopause File. This file gives the orbit-by-orbit times and locations of the ionopause crossings, which are evident as sharp gradients in Ne at the top of the ionosphere. (These crossings always occur within 30 minutes of periapsis, so they may be seen in the High Resolution Ne files).