Interpolator: Please select a csv file that was downloaded from the DDF Historical Observations card. It should contain `globalRadiation60Min` and/or `shortWaveRadiation` as a column. This tool accepts hourly data and will provide an interpolated file with 15-minute intervals.
Gap Checker: This tool checks for gaps in hourly data for each station in the uploaded file. It will report any gaps that are longer than 6 hours.