The astonishing effects of the shutdown, in 8 charts ( www.vox.com )

The longest shutdown, by the numbers.

It’s Day 21 of the partial government shutdown, and it’s about to be the longest one ever.

While President Donald Trump and Democrats continue to duke it out over the politics of a border wall, the impact of the stalemate has already become very, very real for hundreds of thousands of federal workers, many of whom missed their first paycheck on Friday.

The National Parks Service, the Transportation Security Administration, and the IRS are just a few of the government agencies that have been affected by the impasse, which is expected to cause serious economic fallout as well.

Here are eight charts that illustrate what exactly the costs of the shutdown are.

The current shutdown is only a partial one, as Congress has already funded 75 percent of the federal government until September. Right now, there are still seven outstanding spending bills that have yet to be passed, which affect nine federal departments including Agriculture, Transportation, and the Interior.

Nine of 15 federal departments are impacted by the shutdown

Each federal agency has its own contingency plan in the case of a shutdown, meaning they are all affected in slightly different ways. Every agency determines which employees are “essential” and “nonessential” — “essential” employees must keep reporting to work even though they won’t receive immediate pay, while “nonessential” employees are furloughed and told to stay home until the shutdown ends.

These plans vary significantly by agency. In some departments like Homeland Security, an overwhelming majority of its employees are considered “essential,” while in agencies like the IRS, for example, a majority have been deemed “nonessential” and furloughed.