This history has only a week's worth of local history data to display, even though the time range is configured for year-to-date. More records could be available from an archive.

The History Summary View confirms the local history data is confined to a 672 record capacity (rolling). To access this view, click the drop-down list in the upper right corner of the chart.

The local data consists of only 672 records, basically a week’s worth of 15–minute interval data.