Instead of repeating the label, only include it with the first data point in each column.
Design Better Data Tables
Matthew Ström

This suggestion creates tables that are easier for humans to read, but harder for machines.

Novices are likely to perform layout in a spreadsheet program (e.g., MS Excel), but the resulting files are difficult to work with. Many government data sets have this problem: agencies will offer a downloadable Excel file that is human-readable but more difficult to load into R or Python.

Tables that look like this on the web are harder to scrape.

I ask that authors provide both human- and machine-readable formats for all data sets.