My spreadsheet detailing the racial component of the primary results between Sanders and Clinton has been updated to reflect the Wisconsin and Wyoming races as well as the approximate delegates for Washington State as published in the New York Times. The population and demographic data is taken from the US Census Quickfacts interface.
The first thing we see is Wisconsin effectively ended The Sweep. What was remarkable about The Sweep, meaning the races from Idaho, Utah, Alaska, Hawaii, and Washington, is that Sanders won at about 70% or more of the delegates in every race. Previously he had only won by this margin in Kansas and Vermont. These major wins were after 8 races where he at best tied, and one race in which he received only 11% of the delegates. In Wyoming, a small predominately White non-hispanic state, he won by a small margin, effectively a tie in delegates.