This data set is created using 97 data (bk_cov, ptrack, b3a_cov, b3p_cov, b3a_dl1, b3p_dl1, b3a_dl2, b3a_dl4, b3p_dl4, b5_cov, b5_dla1, b5_dla3, hh_ind_weight, agemth97_00) AND 2000 data (bk_cov,bk_ar1,b3a_cov,b3p_cov, b3a_dl1, b3p_dl1, b3a_dl4, b3p_dl4 b5_cov, b5_dla1, b5_dla3, hh_ind_weight, agemth97_00)