CLAS physics database search results Measurement E15M68 E99-105 M. Garçon, M. Guidal, E. S. Smith 2002 phi dsigma/dphi Data errors deg mcbn/rad mcbn/rad 20 0.04002297 0.009332453 60 0.03882714 0.007687104 100 0.03054171 0.006914903 140 0.0301283 0.01429804 220 0.03433345 0.01486654 260 0.04910516 0.008414525 300 0.04945824 0.008714025 340 0.04759077 0.0109355