REPORT THIS MONTH LAST MONTH DIFFERENCE   Pennsylvania 20.50 19.60 0.90 PENNSYLVANIA 10 MONTHS 27 MONTHS THIS YEAR Average 18.05 16.69 18.06 High 20.50 20.50 20.50 Low 16.30 12.90 16.30 Data provided by iNet Solutions Group, Inc. All commodity prices delayed 10 minutes.