- Trading Screen Product Name
 - NG Index IF for GDD Futures
 - Trading Screen Hub Name
 - Panhandle
 - Contract Symbol
 PIS
- Settlement Method
 Cash settlement
- Contract Size
 2500 MMBtus
- Currency
 USD
- Minimum Price Fluctuation 
 The price quotation convention shall be One hundredth of a cent ($0.0001) per MMBtu; minimum price fluctuation may vary by trade type. Please see Table in Resolution 1 to this Chapter 18. 
- Listing Cycle
 Up to 120 consecutive monthly Contract Periods
- Last Trading Day
 The last Business Day prior to the first calendar day of the Contract Period
- Final Settlement
 Average of the Reference Price A prices minus Reference Price B
- REFERENCE PRICE A
 NATURAL GAS-OKLAHOMA (PANHANDLE)-GAS DAILY
- a) Ref Price A - Description
 "NATURAL GAS-OKLAHOMA (PANHANDLE)-GAS DAILY" means that the price
for a Pricing Date will be that day's Specified Price per MMBTU of
natural gas for delivery on the Delivery Date, stated in U.S.
Dollars, published under the heading "Daily Price Survey ($/MMBtu):
Midcontinent: Panhandle, Tx.-Okla.: Midpoint" in the issue of Gas
Daily that reports prices effective on that Pricing Date.
- b) Ref Price A - Pricing Date
 Each day that prices are reported for the Delivery Date
- c) Ref Price A - Specified Price
 Midpoint
- d) Ref Price A - Pricing calendar
 Gas Daily
- e) Ref Price A - Delivery Date
 Each calendar day in the Contract Period
- REFERENCE PRICE B
 NATURAL GAS-PEPL (TEXOK MAINLINE)-INSIDE FERC
- a) Ref Price B - Description
 "NATURAL GAS-PEPL (TEXOK MAINLINE)-INSIDE FERC" means that the
price for a Pricing Date will be that day's Specified Price per
MMBTU of natural gas for delivery on the Delivery Date, stated in
U.S. Dollars, published under the heading "Monthly Bidweek Spot Gas
Prices ($/MMBtu): Midcontinent: Panhandle, Tx.-Okla. : Index" in
the issue of Inside FERC that reports prices effective on that
Pricing Date.
- b) Ref Price B - Pricing Date
 First publication date of the Contract Period
- c) Ref Price B - Specified Price
 Index
- d) Ref Price B - Pricing Calendar
 Inside FERC
- e) Ref Price B - Delivery Date
 Contract Period
- Final Payment Date
 The third Clearing Organization business day following the last Business Day of the Contract Period
- MIC Code
 - IFED
 - Clearing Venues
 - ICEU