Number of spaces after periods used by U.S. Courts of Appeals in opinions

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We put together this graphic during quarantine — which is, perhaps, the only valid reason to put this much effort into answering the question of how many spaces each circuit court uses after a period.

For those interested, here are the cases we used as sources:

First Circuit: United States v. Perez-Cubertier, No. 16-2186, 2020 WL 2214363 (1st Cir. May 7, 2020)
Second Circuit: In re Motors Liquidation Co., 957 F.3d 357 (2d Cir. 2020)
Third Circuit: Darrington v. Milton Hershey Sch., No. 19-2754, 2020 WL 2177584 (3d Cir. May 6, 2020)
Fourth Circuit: Perez v. Cuccinelli, 949 F.3d 865, 867 (4th Cir. 2020)
Fifth Circuit: Bradley v. Sheriff’s Dep’t St. Landry Par., No. 18-30600, 2020 WL 2213561 (5th Cir. May 7, 2020)
Sixth Circuit: United States v. Foreman, No. 19-1827, 2020 WL 2204261 (6th Cir. May 7, 2020)
Seventh Circuit: United States v. Draheim, No. 19-1262, 2020 WL 2213562 (7th Cir. May 7, 2020)
Eighth Circuit: United States v. Becerra, No. 18-2777, 2020 WL 2201761 (8th Cir. May 7, 2020)
Ninth Circuit: Ctr. for Biological Diversity v. Esper, No. 18-16836, 2020 WL 2182175 (9th Cir. May 6, 2020)
Tenth Circuit: Aposhian v. Barr, No. 19-4036, 2020 WL 2204198 (10th Cir. May 7, 2020)
Eleventh Circuit: Welch v. United States, No. 14-15733, 2020 WL 2181883 (11th Cir. May 6, 2020)
DC Circuit: Waggel v. George Washington Univ., No. 18-7181, 2020 WL 2296869 (D.C. Cir. May 8, 2020)