I'm not sure I understand what you mean by "it's limited to the first column in a Numbers or excel spreadsheet." When describing actions, it's useful to avoid pronouns and use the actual term to identify what 'it' is.
My guess is you mean that when you copy the text from the PDF, then paste it into a spreadsheet, the text all goes into the first column of the spreadsheet. If so, that's expected behaviour. The text in the pdf has no 'special' delimiter telling where one cell's contents ends and the next cell's content begins.
That's the reason for initially pasting not into a spreadsheet, but into a text editor where you can determine if there is a discernible separator (in my test document, most but not all data items were separated from the one following by two spaces) that can be replaced with a tab character using Find/Replace.
If your data itself contains no spaces that are part of the actual data, your task is made somewhat easier. Use Find/Replace (in the text editor) to find all occurrences of two spaces together and replace them with a single space. Repeat until zero occurrences are found, then Find the single spaces and Replace them with single tabs. Select All, copy, go to your spreadsheet, click once on the top left cell where the data is to start and Paste.
If your data itself contains spaces (eg. one cell contains the data "Thornton W. Burgess") your task is more difficult, especially if you find (as I did) that spacing between 'cells' was not consistent, and sometimes was only a single space character. In this situation, you'll have some initial searching and manual insertion of an extra space to ensure that each piece of data has at least two spaces separating it from the next. When you've done that, use Find/Replace to reduce all series of contiguous spaces to a maximum of two, then Find/Replace to replace all occurrences of two contiguous spaces with a single tab character. Then select All, Copy and Paste as above.
Easier by far of course,if it can be done, is to arrange to get a copie of the original Excel file. but failing that, you need to work with what you've got, and what you've got in a PDF is a visual representation of what the original would look like on paper. The representation may contain the original text, but won't include the delimiters in a form which you can extract easily.
Regards,
Barry