Codebook

Below is an explanation for each variable/column in p3k14c.

† indicates variables which have been collected directly from source datasets without any consolidation, cleaning, or verification. Use with discretion.

Column	Type	Description
LabID	String	Lab identification code, unique to every date
Age	Integer	Radiocarbon age in years before present (BP)
Error	Integer	One sigma standard error of the radiocarbon age
Material†	String	Dated material
Taxa†	String	Taxonomic name for dated material
d13C†	Float	δ13C istopic signature. Note that some datasets use “0” instead of NA or a blank cell
Method†	String	The method of radiocarbon dating used, such as AMS or radiometric
Long	Float	Longitude in decimal degrees
Lat	Float	Latitude in decimal degrees
LocAccuracy	Integer	A general rating of the accuracy of a given date’s location, according to dataset authors and our own verification. Ranges from 0 (lowest accuracy) to 3 (highest accuracy): 0: No specific locational information / only date’s Country provided 1: Province/State (non-US) or county (US) locational information 2: Very close locational information (within 500m) 3: Exact location of site provided / data’s source collected personally
Period†	String	Archaeological time period. Common in European datasets, generally uncommon elsewhere
SiteID†	String	Site identification number. Very useful for US and Canadian sites, otherwise uncommon
SiteName†	String	Site name, usually unique to each site within each country. Common in sites outside of North America
Country	String	The country in which the date was found
Province	String	The administrative subdivision in which the date was found
Continent	String	The continent on which the date was found
Source	String	The source dataset which provided the date
Reference†	String	Full academic reference for the date, if available