CLAS physics database search results Measurement E46M211 N/A 0 Q^2 sigma_L Data errors GeV2 mcb mcb 2.05 0.905873 0.32753 2.35 0.540566 0.172411 2.65 0.48114 0.149241 2.95 0.378331 0.116935 3.295 0.334688 0.104995