The natural gas inventory data did not have much of an impact on the ProShares Ultra Long Oil & Gas ETF (AMEX: DIG), which appears to be carving out a new trading range between 84.00 and 80.50, after emerging yesterday from a lower trading range between 76.00 and 80.00. The higher range represents the next phase of the basing attempt that has been in progress for the past week. A sustained hurdle of 84.50/70 is needed to trigger additional upside potential off of the base into the 89.00-90.00 target zone. Conversely, a breach of 80.50/00 near-term support will begin to compromise the efficacy of the developing base pattern.