1. Key Laboratory of Solar Activity, National Astronomical Observatories; Chinese Academy of Sciences; Beijing China
2. Space and Atmospheric Sciences Division; Physical Research Laboratory; Ahmedabad India
3. Astronomy and Astrophysics Division; Physical Research Laboratory; Ahmedabad India
4. Physical Research Laboratory; Ahmedabad India
5. Department of Earth and Planetary Sciences, International Center for Space Weather Science and Education; Kyushu University; Fukuoka Japan
6. Institute for Space-Earth Environmental Research; Nagoya University; Nagoya Japan