def stats_history_csv_header():
    """Headers for the stats history CSV"""
    return ','.join(('"Type"', '"Name"', '"Timestamp"', '"# requests"',
        '"# failures"', '"Requests/s"', '"Requests Failed/s"',
        '"Median response time"', '"Average response time"',
        '"Min response time"', '"Max response time"',
        '"Average Content Size"', '"50%"', '"66%"', '"75%"', '"80%"',
        '"90%"', '"95%"', '"98%"', '"99%"', '"99.9%"', '"99.99%"',
        '"99.999"', '"100%"')) + '\n'
