In this article, we analyze vertical total electron content (VTEC) over Nepal for 4 periods: March 14–25, 2015, June 18–29, May 24–June 4, 2017, and September 3–14, 2017. each period, there are quiet geomagnetic days intense stormy days. The VTEC observed during these periods has both positive negative ionospheric storms. We compared Receiver-Independent Exchange Format (RINEX) observations wit...