Research;
Laboratory,;
Department;
of;
Physics;
Federal;
University;
of;
Technology,;
Akure;
340001,;
Ondo;
State,;
Nigeria;
(National;
Space;
Research;
Development;
Agency);
Abuja;
900271,;
Nigeria;
of;
Physics;
and;
Electronics,;
Adekunle;
Ajasin;
University,;
Akungba-Akoko;
342111,;
Ondo;
State,;
Nigeria;
磁力测量; 地磁测量; 天文台; 地面; 地磁数据; 尼日利亚; 地磁变化; 直接测量;