CLAS physics database search results Measurement E39M87 E1-5st-Sigma0 (E93-030/E00-112) Mestayer, Hicks, Carman, Raue 1999 cos(theta) sigma Data errors nb/sr nb/sr -0.6 0 0 -0.25 16.26 3.11 0.05 25.34 3.07 0.35 18.59 4.82 0.65 15.06 5.23 0.9 13.34 6.17