def _srvc_make_overview_tables(self, tables_to_make, traj=None):
        """Creates the overview tables in overview group"""
        for table_name in tables_to_make:
            # Prepare the tables desciptions, depending on which overview table we create
            # we need different columns
            paramdescriptiondict = {}
            expectedrows = 0

            # Every overview table has a name and location column
            paramdescriptiondict['location'] = pt.StringCol(
                pypetconstants.HDF5_STRCOL_MAX_LOCATION_LENGTH,
                pos=0)
            paramdescriptiondict['name'] = pt.StringCol(pypetconstants.HDF5_STRCOL_MAX_NAME_LENGTH,
                                                        pos=1)

            paramdescriptiondict['comment'] = pt.StringCol(
                    pypetconstants.HDF5_STRCOL_MAX_COMMENT_LENGTH)

            paramdescriptiondict['value'] = pt.StringCol(
                    pypetconstants.HDF5_STRCOL_MAX_VALUE_LENGTH, pos=2)

            if table_name == 'config_overview':
                if traj is not None:
                    expectedrows = len(traj._config)

            if table_name == 'parameters_overview':
                if traj is not None:
                    expectedrows = len(traj._parameters)

            if table_name == 'explored_parameters_overview':
                paramdescriptiondict['range'] = pt.StringCol(
                    pypetconstants.HDF5_STRCOL_MAX_RANGE_LENGTH)
                paramdescriptiondict['length'] = pt.IntCol()
                if traj is not None:
                    expectedrows = len(traj._explored_parameters)

            if table_name.endswith('summary'):
                paramdescriptiondict['hexdigest'] = pt.StringCol(64, pos=10)

            # Check if the user provided an estimate of the amount of results per run
            # This can help to speed up storing
            if table_name == 'derived_parameters_overview':

                expectedrows = self._derived_parameters_per_run

                if traj is not None:
                    expectedrows *= len(traj)
                    expectedrows += len(traj._derived_parameters)

            if table_name == 'results_overview':
                expectedrows = self._results_per_run

                if traj is not None:
                    expectedrows *= len(traj)
                    expectedrows += len(traj._results)

            if expectedrows > 0:
                paramtable = self._all_get_or_create_table(where=self._overview_group,
                                                           tablename=table_name,
                                                           description=paramdescriptiondict,
                                                           expectedrows=expectedrows)
            else:
                paramtable = self._all_get_or_create_table(where=self._overview_group,
                                                           tablename=table_name,
                                                           description=paramdescriptiondict)

            paramtable.flush()
Creates the overview tables in overview group