Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://pandas.pydata.org/pandas-docs/stable/getting_started/intro_tutorials/01_table_oriented.html#pandas-data-table-representation

Documentation problem

The section:

• Talks about labels, but these aren't shown in the diagram.
• Doesn't mention the index.

existing data structures diagram

Suggested fix for documentation

Diagram

I made a diagram I use when teaching classes (source).

Aidan's diagram

I suggest we replace the data structures diagram on the pandas page with mine. Maybe a variant of mine, styled to match the rest of the diagrams on that page. Not sure if editable files are available for those, which could be used as a starting place. (I'm being lazy and not checking myself 😛 )

Indexes

Add some information to the page about them. We should also link there from https://pandas.pydata.org/docs/user_guide/indexing.html, as (from a glance) that page doesn't really explain what indexes are.