CLAS physics database search results Measurement E15M51 E99-105 M. Garçon, M. Guidal, E. S. Smith 2002 phi dsigma/dphi Data errors deg mcbn/rad mcbn/rad 20 0.03705635 0.005808793 60 0.03687903 0.00432454 100 0.04683405 0.004540426 140 0.04180263 0.004533855 180 0.03064457 0.007665549 220 0.04530683 0.004262496 260 0.03451755 0.003918172 300 0.04054035 0.004302642 340 0.03677176 0.005665771