def stats_history_csv_header():
    """Headers for the stats history CSV"""
    return ','.join(('"Timestamp"', '"User Count"', '"Type"', '"Name"',
        '"Requests/s"', '"Failures/s"', '"50%"', '"66%"', '"75%"', '"80%"',
        '"90%"', '"95%"', '"98%"', '"99%"', '"99.9%"', '"99.99%"',
        '"99.999%"', '"100%"', '"Total Request Count"',
        '"Total Failure Count"', '"Total Median Response Time"',
        '"Total Average Response Time"', '"Total Min Response Time"',
        '"Total Max Response Time"', '"Total Average Content Size"')) + '\n'
