REPORT THIS MONTH LAST MONTH DIFFERENCE   South Dakota 56.80 60.70 -3.90 SOUTH DAKOTA 10 MONTHS 27 MONTHS THIS YEAR Average 59.36 52.62 56.27 High 64.20 64.20 64.20 Low 51.20 40.50 44.90 Data provided by iNet Solutions Group, Inc. All commodity prices delayed 10 minutes.