measurements_Th_Apnia is file available to open with Thellier_GUI software (Shaar y Tauxe, 2013), within Pymagpy package (Tauxe et al, 2016). Also you can use ThellierTool (Leonhardt et al.,2004). It contains Thellier-Thellier (Thellier y Thellier 1959) and IZZI (Yu et al. 2004) paleointensity mesurements on the Pliocene volcanic sequence of Apnia (Georgia). The files are in .txt format separated by tabs. The experiments were carried out at paleomagnetics laboratories of Universidad de Burgos (Spain) and Scripps Institution of Oceanography, UCSD (USA). MSP_Apnia zip file contains measurements of original multiespecimen method (MSP-DB) (Biggin and Poidras, 2006; Dekkers and Böhnel, 2006) and multispecimen domain state correction method (MSP-DSC) (Fabian and Leonhardt, 2010) on the Pliocene volcanic sequence of Apnia (Georgia). The files are .csv format and can be open with MultiSpecimen Paleointensity on line software (Geosciences Montpellier, France) (Camps et al., 2016). Also contains Q values and error parameters calculation tables. The experiments were carried out at paleomagnetics laboratories of Geosciences, Universite de Montpellier (France) and Servicio Arqueomagnético Nacional, IGF-IGUM, UNAM, Campus Morelia, Universidad Nacional Autónoma de México (México). Biggin, A., Poidras, T., 2006. First-order symmetry of weak-field partial thermoremanence in multi-domain ferromagnetic grains. 1. Experimental evidence and physical implications. Earth Planet. Sci. Lett. 245, 438–453. doi:10.1016/j.epsl.2006.02.035 Camps et al., Solid Earth, XX, (X), pp-pp, 2016.http://ambre.gm.univ-montp2.fr/camps/MSP_DSC/ Dekkers, M.J., Böhnel, H.N., 2006. Reliable absolute palaeointensities independent of magnetic domain state. Earth Planet. Sci. Lett. 248, 507–516. doi:10.1016/j.epsl.2006.05.040 Fabian, K., Leonhardt, R., 2010. Multiple-specimen absolute paleointensity determination: An optimal protocol including pTRM normalization, domain-state correction, and alteration test. Earth Planet. Sci. Lett. 297, 84–94. doi:10.1016/j.epsl.2010.06.006 Leonhardt, R., Heunemann, C., Krasa, D., 2004. Analyzing absolute paleointensity determinations: Acceptance criteria and the software ThellierTool4.0. Geochemistry, Geophys. Geosystems 5, 1–11. doi:10.1029/2004GC000807 Shaar, R., Tauxe, L., 2013. Thellier GUI: An integrated tool for analyzing paleointensity data from Thellier-type experiments. Geochemistry, Geophys. Geosystems 14, 677–692. doi:10.1002/ggge.20062 Tauxe, L., Shaar, R., Jonestrask, L., Swanson-Hysell, N.L., Minnett, R., Koppers, A.A.P., Constable, C.G., Jarboe, N., Gaastra, K., Fairchild, L., 2016. PmagPy: Software package for paleomagnetic data analysis and a bridge to the Magnetics Information Consortium (MagIC) Database. Geochemistry, Geophys. Geosystems 17, 2450–2463. https://doi.org/10.1002/2016GC006307 Thellier, E., Thellier, O., 1959. Sur líntensité du champ magnétique terrestre dans le passé historique et géologique. Ann. Geophys. 15, 285–376. Yu, Y., Tauxe, L., Genevey, A., 2004. Toward an optimal geomagnetic field intensity determination technique. Geochemistry, Geophys. Geosystems 5, n/a-n/a. doi:10.1029/2003GC000630