965    float * ysum = NULL;              /* pointer to overall sum data */  in calculate_ysum()  local
978    ysum = (float *) malloc(sizeof(float)*nxyz);  in calculate_ysum()
979    if ((y == NULL) || (ysum == NULL))  in calculate_ysum()
984    volume_zero (ysum, nxyz);  in calculate_ysum()
990          ysum[ixyz] += y[ixyz];  in calculate_ysum()
994       printf ("y.. = %f \n", ysum[nvoxel-1]);  in calculate_ysum()
995    volume_write ("ysum",ysum, nxyz);  in calculate_ysum()
998    free (ysum);  ysum = NULL;  in calculate_ysum()
1065    float * ysum = NULL;                /* ptr to sum over all observations */  in calculate_ssto()  local
1079    ysum = (float *) malloc(sizeof(float)*nxyz);  in calculate_ssto()
1081    if ((ysum == NULL) || (ssto == NULL))  in calculate_ssto()
1086    volume_read ("ysum", ysum, nxyz);  in calculate_ssto()
1089       yval = ysum[ixyz];  in calculate_ssto()
1103    free (ysum);   ysum = NULL;  in calculate_ssto()