Using a spreadsheet tool like Excel or Google Sheets, format your data
according to guidelines below, then copy and paste into the text box.
To see sample data, click one of the buttons at the end of the guidelines.
The first row of data must be column headings (field labels).
Each column heading must be unique.
The first column of data must be row headings (record labels).
The remaining columns must be numerical data or blank if there
is no data in a column for a particular record. Note that any row
(record) with a missing value will be excluded from the tabular
visualizations and possibly may also be excluded from the plot
visualizations.