CLAS physics database search results Measurement E15M52 E99-105 M. Garçon, M. Guidal, E. S. Smith 2002 phi dsigma/dphi Data errors deg mcbn/rad mcbn/rad 20 0.3845583 0.02850089 60 0.3068735 0.03051229 100 0.3596129 0.04030082 140 0.2836099 0.03955602 180 0.4199685 0.09703875 220 0.3716593 0.05205576 260 0.3414831 0.02973793 300 0.4165896 0.03415555 340 0.4106793 0.03045043