| Affiliation: |
| AA(Wuhan Ionospheric Observatory, Wuhan Institute of Physics,
Chinese Academy of Sciences, P.O. Box 71010 430071 Wuhan, P.R. China),
AB(Atmospheric Physics and Radiopropagation Laboratory, International
Centre for Theoretical Physics, P.O. Box 586 34100 Trieste, Italy),
AC(Atmospheric Physics and Radiopropagation Laboratory, International
Centre for Theoretical Physics, P.O. Box 586 34100 Trieste, Italy),
AD(Wuhan Ionospheric Observatory, Wuhan Institute of Physics, Chinese
Academy of Sciences, P.O. Box 71010 430071 Wuhan, P.R. China) |