obs_loc.gam_C_obs=151;
obs_loc.gam_CG_obs=152;
obs_loc.gam_I_obs=153;
obs_loc.gam_ICo_obs=154;
obs_loc.gam_Y_obs=155;
obs_loc.gam_YCo_obs=156;
obs_loc.gam_YR_obs=157;
obs_loc.gam_Ystar_obs=158;
obs_loc.gam_W_obs=159;
obs_loc.gam_WN_obs=160;
obs_loc.gam_HN_obs=161;
obs_loc.pi_obs=162;
obs_loc.piZ_obs=163;
obs_loc.piA_obs=164;
obs_loc.piO_obs=165;
obs_loc.piCostar_obs=166;
obs_loc.piMstar_obs=167;
obs_loc.piOstar_obs=168;
obs_loc.pistar_obs=169;
obs_loc.R_obs=170;
obs_loc.Rstar_obs=171;
obs_loc.rer_obs=172;
obs_loc.stb_obs=173;
obs_loc.xi_obs=174;
obs_loc.piM_obs=175;
obs_loc.piS_obs=176;
