WGR is best received here in southern Michigan during daylight hours with a weak but readable
5kw omnidirectional signal across Lake Erie. The nighttime pattern shows most of the signal northward.
Early this morning, the 550 spot here is occupied by WKRC Cincinnati and KTRS St. Louis
(depending on antenna direction), WGR was not heard.
Anyway, good job catching WGR in DC as most of the signal is pointed away from you.