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Official website of the Department of Homeland Security

Transportation Security Administration

What is the TSA histogram and why doesn’t the Y-axis appear on the histogram?

The TSA histogram allows travelers to better prepare before leaving for the airport. The Y-axis represents the peak amount of passengers based on past data. It is categorized by: typically not busy, typically not too busy, typically busy, typically very busy. You may select your desired day and time to display the Y-axis data value. This option is under the “Plan for Your Trip” section.