REPORT TODAY YESTERDAY DIFFERENCE   So. Iowa 3.56 3.55 0.01 SO. IOWA 10 DAYS 27 DAYS THIS YEAR Average 3.55 3.58 3.68 High 3.59 3.87 4.19 Low 3.49 3.43 3.43 Data provided by iNet Solutions Group, Inc. All commodity prices delayed 10 minutes.