Well, you are right in this: the average daily range for the ER2 futures is typically closer to 11:
ADR 5: 11.4
ADR20: 10.3
ADR50: 11.2
ADR200: 12.5
So, todays range of 16.1 is clearly outside the norm. Even so, the daily isn't falling apart and there are indications that it may yet rebound should it stay above 780 or so. It's not fun being bearish...yet.
best, amg
<a href="http://versaluna.com/2006/061218_er2D.png"><img src="http://versaluna.com/2006/061218_er2D.png" width="150"></a>