wdf fix

The following inputs must be preceded by "amr" and control whether to compute

monitors, i.e., spatial averages, and how often to output the results. 

n is the number of monitors specified in avg_int. 

n is the number of monitors implicitly defined by the size of avg_region_x_w. 

+------------------+-----------------------------------------------------------------------+-------------+-----------+

|                  | Description                                                           |   Type      | Default   |