A vertical line of information in a table or chart.
“The 'price' column shows the cost for each membership tier.”
“Check the last column for the renewal deadline of each plan.”
Column headers usually label the type of information given, such as price, duration, or eligibility. Read column headers first to understand the structure of the diagram before matching details from a specific row. Confusing which column a number belongs to is a frequent source of mistakes in this task.
Synonyms: field, vertical line, category header