Supplementary data and source code to "Estimation of the total magnetization direction of approximately spherical bodies". Article submitted for publication to Nonlinear Processes in Geophysics. The original submission and open peer-review can be viewed at http://dx.doi.org/10.5194/npgd-1-1465-2014 This is an archive of the git version controlled repository containing: the manuscript LaTeX source files; IPython notebooks (www.ipython.org) containing source code to perform the applications to synthetic and real data; the total field magnetic anomaly data used in the real data application. See the original repository at https://github.com/pinga-lab/Total-magnetization-of-spherical-bodies The source code that implements the proposed methodology is included in version 0.3 of the open-source software Fatiando a Terra (www.fatiando.org). See module fatiando.gravmag.magdir.