The style sheet referenced in the API reference guide is shown on page 1-47 (page 63 in the PDF) in the API guide.
Just found it a little after sending the question. Since I am not a programmer, this may be a silly question. Is there a stylesheet available that can display raw or historic performance data for one or more elements "in a tabular format" or something close to that - time based values of samples for a day for different parameters being collected
We don't have anything already configured to do that. If you don't have access to anyone at your company who has that expertise, you can try adjusting the command to return the data in CSV format. You can then import the CSV file into a program like Excel.