CASTNet Dry Chemistry Data
Daily US data of the Clean Air Status and Trends Network (CASTNet). The voyager files included
in this zip archive are for data from 1987-1995. The zipped data files contain the files used for the voyager compilation among which are data files in ASCII format.
For the monthly aggregation, at least two valid data points were required for a site.
For the quarterly aggregation, at least 6 valid data points were required for a site.