http://www.payscale.com/data-packages/ceo-income/full-list

Typical Median Pay: The median pay is the national median (50th Percentile) annual total cash compensation.  Half of the people doing the job earn more than the median, while half earn less.

Range in pay within a job can be very wide depending upon years of experience, scope of responsibility, location of work, etc.  For example, pay can be higher than the stated median pay if the worker has more responsibility, chooses a higher paying field, or works in a city like New York.