This data release documents three Microsoft Excel tables (and corresponding comma separated data files) that contain estimates of tritium in precipitation data for the continental United States. Versions of this data release contain additional tritium data for more recent years. The current version has tritium data through 2022. Table 1 contains estimates of tritium in precipitation for precipitation stations located in the continental United States. Measured precipitation data are formatted in regular font while correlated data are italicized. Table 2 contains tritium in precipitation for ninety-six 2-degree latitude by 5-degree longitude quadrangles covering the continental U.S. Latitudes are north of the equator and longitudes are west of the prime meridian. Please see the processing steps below and the main manuscript for additional details on the results presented in this table. Table 3 contains the correlation coefficients used to correlate tritium in precipitation data from Vienna, Austria to the station or quadrangle for dates after January 1, 1987. The coefficient of determination, also known as the R-squared values is listed for each month. Copies of each table also are provided in comma separated formats. Version 1 of this data release (published 7/31/2018) contained estimates of tritium in precipitation for the period 1953-2012. This new version appends estimates for the period from 2013 to 2023.