The national basis levels for corn remain unchanged again this week at 43 cents under the December futures contract. Regional basis continues to widen for corn, compared to one week ago. Corn basis at the six local elevators the Red River Farm Network follows range from 60 to 92 cents under. The national average basis for soybeans is also unchanged at $1.03 under the November futures contract. Local soybean basis is from $1.50 to $1.74 under the November futures. Local spring wheat basis improved slightly from last week. Ranges start at 40 cents under the December futures to 92 cents under the November futures.