counted during the course of that period.
3) If the December Philadelphia contract trades on Dec. 1st at 1025 HDDs, then settles on Dec. 31st at 1080, then the buyer earns $1,100 from the 55 HDD colder outcome.
4) A short seller of May Dallas futures whose entry level is 385 CDDs would make $600 if the end of month total was only 355 CDDs.
