### Using trend graphs NOTES A gray triangle at the top of a graph indicates a note from the system. Hover your cursor on the triangle to see which of the following occurred: Equipment received a time synchronization from its network router or from the WebCTRL® application. Trend Historian has been enabled or disabled. Trend Log has been enabled or disabled. The trend object ID of a third-party trend source has been changed. For information only, you do not need to do anything. Click at the top of the WebCTRL® page to print the graph. You may need to set your printer's orientation to Landscape. Toolbar options are also accessible by right-clicking a trend graph. You can check Display gap in graph line for missing data on an individual trend graph page, or you can go to the System Settings > General tab to set this for all future trend graphs.
#### To view trend data in a spreadsheet program You can save trend data as csv data that you can open in a spreadsheet program such as Microsoft® Excel®. On the Trends > View tab, select > Save as CSV data. Save the data (.zip file) wherever you want. The .zip file contains the following: A .csv file for each trend source (point). The filenames match the point names. A Combined folder containing a file with the combined data for all of the graph's trend sources. Open the .csv file in a spreadsheet program. NOTES You will need to convert the data in the spreadsheet's Time column to a readable date/time format. If you use Microsoft® Excel® on a Mac and the converted date shows the wrong year, do the following: In Excel, go to File > Options > Advanced. Scroll down to the section When calculating this workbook, and then uncheck Use 1904 date system.