1. Space and Atmospheric Sciences Division; Physical Research Laboratory; Navarangpura, Ahmedabad, Gujarat India
2. Indian Institute of Astrophysics; Bangalore India
3. Indian Institute of Geomagnetism; Navi Mumbai India
4. Los Alamos National Laboratory; Los Alamos New Mexico USA
5. Space Environment Research Center; Kyushu University; Fukuoka Japan
6. Solar-Terrestrial Environment Laboratory; Nagoya University; Nagoya, Aichi Japan