GEOMAGNETIC ACTIVITY: A sharp gust of solar wind hit Earth's magnetic field at the end of the UT day on Oct. 21st, sparking a mild geomagnetic storm and Northern Lights around the Arctic Circle. Images: from Steve Milner of Fort St. John, BC, Canada; from Whitham D. Reeve of Anchorage, Alaska;
in the day 17 sporadic e opened is a good explain fenomen .
Solar protonos up to 3p/cm³ is good from thios period and this 3 protons during 1 day !
in this day
appear a level to incrasing localy atmosferic protons to 7-8p/cm³
this up peak is good from openings in 28mhz or 50mhz band ! Thsi protons us good - poor from tropo , and small up to meteo scatters period !