The national basis levels for corn is steady at 42 cents under the December futures contract. Regional basis is improving for corn, compared to two weeks ago. Corn basis at the six local elevators the RRFN follows range from 60 to 71 cents under. The national average basis for soybeans is slightly improved and steady at $1 under the November futures contract. Local soybean basis is $1.45 to $1.77 under the November futures. Local spring wheat basis widened from two weeks ago. Ranges start at 45 cents to 92 cents under the November futures.