CLAS physics database search results Measurement E42M2 eg1b H.Avakian 2000 P_T A_1 Data errors Systematic errors GeV dimensionless dimensionless dimensionless 0.062 0.413 0.0559 0.026 0.188 0.344 0.0304 0.025 0.312 0.3401 0.0231 0.024 0.438 0.3282 0.0226 0.023 0.562 0.3491 0.0265 0.022 0.688 0.304 0.0403 0.025 0.812 0.2831 0.0628 0.033 0.938 -0.0179 0.1158 0.035