+-----------------+----------------+------+-----+
| Very Long Column Group Name Here | Short      |
+-----------------+----------------+------+-----+
| mpg             | cyl            | disp | hp  |
+=================+================+======+=====+
| 21.0            | 6              | 160  | 110 |
+-----------------+----------------+------+-----+
| 21.0            | 6              | 160  | 110 |
+-----------------+----------------+------+-----+
| 22.8            | 4              | 108  | 93  |
+-----------------+----------------+------+-----+ 
