The meteorological measurements were sending it to foreign observatories to give international visibility to the school (Perez, 1897). The geomagnetic observations taken in the observatory from 1857 to 1859 have been recently revisited by Ribeiro et al. (2011). Pérez R. La Compañía de Jesús en Guatemala y Centro América después de su restauración. Valladolid. Imprenta Castellana. 1897/ Ribeiro P., Vaquero J.M., Trigo R.M. 2011. Geomagnetic records of Carrington's storm from Guatemala. Journal of atmospheric and Solar-Terrestrial Physics 73, 308-315./ Canudas A 1864. Tratado elemental de Física por el P. Antonnio Canudas de la Compañía de Jesus.Imprenta de Magriña y Subirana, Barcelona. 384pp.---The data of this dataset might have been revised during the review process. This might therefore be an old version. To be sure, please check the respective dataset at doi:10.1594/PANGAEA.871480