Sathishkumar Sundararaman1, Sathishkumar Sundararaman1, Sathishkumar Sundararaman1, Sathishkumar Sundararaman1
1Indian Institute of Geomagnetism, TIRUNELVELI, India, 2National Atmospheric Research Laboratory, Gadanki, India, 3Indian Institute of Geomagnetism, Navi Mumbai, India