This is a follow-up to a question about parsing data by it's date. First of all, the sample data being processed:
DATE TIME PRICE
20011015,1730,109275
20011015,1730,109250
20011015,1730,109275
20011015,1730,109275
20011015,1730,109250
20011015,1730,109225
20011015,1730,109275...