Improving Earth’s Magnetic Field Measurements by Numerical Corrections of Thermal Drifts and Man-Made Disturbances

Figure 1

Budkov (BDV), Polom (PLM), and Kelčany (KEL) sites location. The background image is the Czech railway network electrification—green is DC traction; red is AC 50 Hz (modified from [7]). Ex-observatory site Průhonice (PRU) is shown to illustrate moving away from human-made noise.