def _property_table():
    """Download the PDB -> resolution table directly from the RCSB PDB REST service.

    See the other fields that you can get here: http://www.rcsb.org/pdb/results/reportField.do

    Returns:
        Pandas DataFrame: table of structureId as the index, resolution and experimentalTechnique as the columns

    """
    url = 'http://www.rcsb.org/pdb/rest/customReport.csv?pdbids=*&customReportColumns=structureId,resolution,experimentalTechnique,releaseDate&service=wsfile&format=csv'
    r = requests.get(url)
    p = pd.read_csv(StringIO(r.text)).set_index('structureId')
    return p
Download the PDB -> resolution table directly from the RCSB PDB REST service.

    See the other fields that you can get here: http://www.rcsb.org/pdb/results/reportField.do

    Returns:
        Pandas DataFrame: table of structureId as the index, resolution and experimentalTechnique as the columns