MOESM4 of Comparison of global geomagnetic field models and evaluation using marine datasets in the north-eastern Atlantic Ocean and western Mediterranean Sea

Additional file 4. Comparative statistical analysis of differences in intensity values of the anomaly field (ANO) estimated up to SH degree 720 from HDGM2016 and EMM2015 and derived from EMAG2v3 and WDMAM (A) at a global scale reduced by 30° in latitude and 20° in longitude (grid spacing: 1°) and (B) for the NEAWM area (grid spacing: 0.5°).