Hi John,
SAM exports time series data from the parametric results in an awkward format because it can't use commas to separate the time series data within a cell, so it uses semicolons instead.
One option would be to export the data for the individual variables separately by clicking the value in the parametric results table. That should open a window with a table of data and buttons you can use to export the data.
Another trick that might work is to save the data as CSV instead of XLSX and then use a good text editor to 1) replace commas with tabs (\t) and then 2) replace semicolons with commas. Then save the file to a different name (to preserve the original data, just in case) and try opening it it in Excel.
Best regards,
Paul.