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| Rocky Mountain (PADD 4) Residual Fuel Oil Sulfur Less Than or Equal to 1% Retail Sales by All Sellers (Dollars per Gallon) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1983 | W | W | W | W | W | - | - | - | - | - | - | - |
| 1984 | - | - | W | W | W | W | W | 0.624 | 0.620 | W | 0.675 | 0.737 |
| 1985 | 0.722 | 0.690 | 0.680 | W | W | W | W | W | W | W | W | W |
| 1986 | W | W | W | W | W | W | W | 0.325 | 0.343 | 0.352 | 0.380 | 0.360 |
| 1987 | 0.338 | 0.343 | 0.389 | W | W | W | - | 0.352 | W | W | W | W |
| 1988 | W | W | W | W | W | W | W | - | - | - | - | - |
| 1989 | W | W | W | W | W | - | W | - | W | W | W | 0.434 |
| 1990 | W | W | W | W | W | W | W | W | W | - | - | W |
| 1991 | W | - | - | W | W | W | W | W | W | W | - | - |
| 1992 | - | - | - | - | W | - | - | W | W | W | - | W |
| 1993 | 0.290 | W | W | W | - | W | - | - | - | W | 0.305 | W |
| 1994 | W | W | W | W | W | NA | W | W | W | 0.356 | 0.354 | 0.333 |
| 1995 | 0.328 | W | W | W | W | W | W | W | W | W | W | W |
| 1996 | W | W | W | W | W | W | W | W | NA | W | NA | - |
| 1997 | - | - | W | W | - | W | W | W | W | - | W | - |
| 1998 | W | - | W | - | W | W | W | W | W | W | W | NA |
| 1999 | - | W | W | W | W | W | W | W | W | - | - | - |
| 2000 | - | - | - | - | - | - | W | - | W | - | - | W |
| 2001 | W | W | 0.506 | 0.514 | W | W | W | - | W | W | NA | - |
| 2002 | - | - | - | - | - | W | W | W | W | W | W | W |
| 2003 | W | W | 0.514 | W | W | W | W | W | 0.459 | W | W | W |
| 2004 | W | W | W | W | 0.486 | W | 0.500 | W | W | W | W | - |
| 2005 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2006 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2007 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2008 | - | - | - | - | - | - | - | - | - | - | - | W |
| 2009 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2010 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2011 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2012 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2013 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2014 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2015 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2016 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2017 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2018 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2019 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2020 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2021 | - | - | - | - | - | - | - | - | - | - | - | - |
| 2022 | - | - | - | |||||||||
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 6/1/2022 |
| Next Release Date: TBD |