Ranges of some of the DTN cash indexes in August confirm the impression that HRW wheat was the wild one.

We've been tracking the ranges between the month's lowest and highest cash corn, soybean and HRW indexes, as a gauge of the month's volatility, and perhaps to get an indication, if you were a cash marketer, of the range of opportunities in that period.

In August, the DTN corn index ranged 33 cents, from a low August 3 of $3.46 to a high August 30 of $3.79. Over the previous 12 months, that range has averaged 39 cents, so August ...