By default, Explore displays each attribute as a tile containing a visualization showing the distribution of values for that attribute.
The default visualization is based on an attribute's data type.
A data quality bar shows the percentage of valid values (blue) and null values (black). You can click a section of the data quality bar to refine the data to only include records with valid, invalid, or null values.
You use the toggle switch at the top right of the list to switch between the tile view and a table view. The table view contains the data set records.