What is the test for reasonable suspicion in civil cases?

To determine whether an officer had reasonable suspicion to justify the intrusion complained of, we "must look at the totality of the circumstances" to see if the "officer ha[d] a particularized and objective basis for suspecting legal wrongdoing." United States v. Arvizu , 534 U.S. 266, 273, 122 S.Ct. 744, 151 L.Ed.2d 740 (2002) (internal quotation marks omitted). "Although a mere hunch does not create reasonable suspicion, the level of suspicion the standard requires is considerably less than proof of wrongdoing by a preponderance of the evidence, and obviously less than is necessary for probable cause." Navarette v. California , 572 U.S. 393, 397, 134 S.Ct. 1683, 188 L.Ed.2d 680 (2014) (citation omitted) (internal quotation marks omitted).