diff --git a/src/data/mat_to_csv.py b/src/data/mat_to_csv.py
index 77a375d..d4dbbe2 100644
--- a/src/data/mat_to_csv.py
+++ b/src/data/mat_to_csv.py
@@ -39,12 +39,11 @@ def parse_orientations(orientations_mat):
 
 def combine_sites_and_orientaions(df_sites, df_orientations):
     """
-    Replaces beach/lat/lon columns with the unique site_id
+    Replaces beach/lat/lon columns with the unique site_id.
     :param dfs:
     :param df_sites:
     :return:
     """
-
     df_merged_sites = df_sites.merge(df_orientations[['beach', 'lat_center', 'lon_center', 'orientation']],
                                       left_on=['beach', 'lat', 'lon'],
                                        right_on=['beach', 'lat_center', 'lon_center'])
@@ -54,8 +53,20 @@ def combine_sites_and_orientaions(df_sites, df_orientations):
     if n_unmatched > 0:
         logger.warning('Not all records (%d of %d) matched with an orientation', n_unmatched, len(df_sites))
 
+    # Drop extra columns
+    df_merged_sites = df_merged_sites.drop(columns = ['lat_center', 'lon_center'])
+
     return df_merged_sites
 
+def specify_lat_lon_profile_center(df_sites, x_val=200):
+    """
+    Specify which x-coordinate in the beach profile cross section the lat/lon corresponds to
+    :param df_sites:
+    :return:
+    """
+    df_sites['profile_x_lat_lon'] = x_val
+    return df_sites
+
 def parse_waves(waves_mat):
     """
     Parses the raw waves.mat file and returns a pandas dataframe
@@ -209,6 +220,7 @@ def main():
 
     logger.info('Combine orientations into sites')
     df_sites = combine_sites_and_orientaions(df_sites, df_orientations)
+    df_sites = specify_lat_lon_profile_center(df_sites)
 
     logger.info('Setting pandas index')
     df_profiles.set_index(['site_id', 'profile_type', 'x'], inplace=True)