Observation Parameters

2001

E-region

F-region

2002

E-region

2003

E-region

2004

2005

V-region

2006

E-region

2007

E-region

2008

2009

2010

2011

E-region

2012

E-region

2013

E-region

2014

E-region

2015

E-region

2016

E-region

2017

E-region

2018

E-region

2019

2020

E-region