Oil and Gas represents the oil and gas industry for Balance Sheet Operating Metrics information collected by Reuters. The Oil and Gas Industry consists of:
Integrated Oil & Gas companies engaged in the exploration, production, refinement and distribution of oil and gas.
Oil & Gas Exploration & Production companies engaged in the exploration and extraction of crude petroleum and natural gas.
Oil & Gas Refining & Marketing companies engaged in the operation of oil and gas refineries for the production of heating, lubricating, and fuel oils, as well as gasoline, diesel, jet fuel, propane, kerosene and other liquefied petroleum gas (LPG) products.
Oil & Gas Drilling companies engaged in oil and gas drilling services on a contract basis. Services include, directional drilling, well drilling and reconditioning of oil and gas field wells.

Oil and NGL Reserves, Possible (Barrels) represents the estimated quantities of oil and liquefied natural gas reserves that have a chance of being developed under favorable circumstances. (in Barrels)

Oil and NGL Reserves, Probable (Barrels) represents the estimated quantities of oil and liquefied natural gas reserves which is categorized as “reasonably probable" of being produced using current or likely technology at current prices, with current commercial terms and government consent. (in Barrels)

Oil and NGL Reserves, Proved (Barrels) represents the estimated quantities of oil and liquefied natural gas reserves which geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions (in Barrels).

Oil Equivalent Production (Barrels/Day) represents the total daily production (of natural gas) in Oil Equivalent Barrel.

Online Sales represents the total value of sales generated over the Internet during the period.

The price at which a security opens the trading day. Generally, the opening price reflects the previous day's close -- unless extraordinary news or demand to buy or sell have occurred before the market opens.

Operating Expense per ASK captures the total operating expenses incurred per available seat kilometer of the airline. It is obtained using total operating expenses divided by total available seat kilometers.

Operating Expense per ASK, excluding Fuel captures the total operating expenses, less aircraft fuel, incurred per available seat kilometer of the airline. It is obtained using total operating expenses, less aircraft fuel, divided by total available seat kilometers.

Operating Income represents the sum of:
Total Revenue
Total Operating Expense.