| This is a test segment containing following columns. | |
| __time, host, visited_sum, unique_hosts | |
| 2014-10-22T00:00:00.000Z, a.example.com, 100, HLL sketch of cardinality 1 | |
| 2014-10-22T01:00:00.000Z, b.example.com, 150, HLL sketch of cardinality 1 | |
| 2014-10-22T02:00:00.000Z, c.example.com, 200, HLL sketch of cardinality 1 |