The author is the National Institute of Anthropology and History (INAH). According to their website, the information and files contained therein can be downloaded and shared without commercial purposes as long as their author is recognized and they are not altered.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.