aryabhatta research institute of observational sciences nainital 263002;
india;
kodaikanal solar observatory;
indian institute of astrophysics;
kodaikanal-624103;
tamil nadu;
india;
udaipur solar observatory;
physical research laboratory;
udaipur 313004;
india;
department of physics;
dsb campus;
kumaun university;
nainital 263002;
india;
cas key laboratory of geospace environment;
department of geophysics and planetary sciences;
university of science and technology of china;
hefei 230026;
china;