DMSP F16, F17, and F18 Polar Cap Crossings during 2015-2023

<p>Lists of DMSP F16, F17, and F18 northern hemisphere polar cap crossings (called <em>events</em> in the file names) during the years 2015-2023. The lists include the time at which the satellite reaches the highest latitude, as well as the times at which it enters and exits the polar cap, respectively. The entrance and exit times are estimated using DMSP measurements of the ion energy flux.</p>