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U.S. API Gravity (Weighted Average) of Crude Oil Input to Refineries (Degree)
U.S. API Gravity (Weighted Average) of Crude Oil Input to Refineries (Degree)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1985 32.64 32.87 32.75 32.58 32.75 32.36 32.33 32.17 32.18 32.25 32.22 32.46
  1986 32.75 32.69 32.85 32.35 32.41 32.21 32.01 32.20 32.05 32.20 32.15 32.25
  1987 32.26 32.42 32.71 32.61 32.24 31.81 31.83 32.17 32.01 32.08 32.11 32.44
  1988 32.22 32.07 31.85 32.01 32.05 31.63 31.75 31.92 31.72 31.86 32.00 32.07
  1989 32.60 32.47 32.06 32.31 32.17 31.85 31.89 31.74 32.04 32.04 32.30 32.31
  1990 32.18 32.10 32.23 31.83 31.96 32.14 31.66 31.71 31.63 31.63 31.63 31.60
  1991 31.47 31.71 31.88 32.07 31.86 31.78 31.68 31.34 31.31 31.58 31.42 31.54
  1992 31.60 31.48 31.56 31.30 31.35 31.26 31.42 31.32 30.81 31.20 31.25 31.26
  1993 31.20 31.41 31.41 31.29 31.30 31.42 31.16 31.08 31.10 31.29 31.33 31.61
  1994 31.06 31.58 31.42 31.33 31.29 31.38 31.44 31.20 31.40 31.42 31.51 31.69
  1995 31.58 31.24 31.42 31.55 31.36 31.05 30.91 31.30 31.01 31.34 31.46 31.37
  1996 31.53 31.21 31.28 31.06 31.57 31.05 31.24 31.20 30.86 30.67 30.90 31.16
  1997 31.46 31.70 31.45 31.20 30.71 30.90 31.14 30.83 30.76 31.01 31.06 30.85
  1998 31.14 30.90 30.72 30.69 30.79 30.40 30.89 31.17 31.14 31.27 31.35 31.30
  1999 31.89 31.34 31.19 31.34 31.24 31.34 31.35 31.00 31.29 31.18 31.36 31.16
  2000 31.37 31.19 31.22 31.38 31.46 31.12 30.93 30.60 30.55 30.89 30.79 30.50
  2001 30.97 30.57 30.71 30.64 30.63 30.30 30.08 30.31 30.58 30.53 30.07 30.52
  2002 30.59 30.54 30.67 30.58 30.63 30.16 29.95 30.26 30.33 30.53 30.39 30.50
  2003 31.22 30.94 30.95 30.90 30.31 30.55 30.29 30.52 30.62 30.58 30.31 30.20
  2004 30.25 30.60 30.39 30.21 30.31 30.05 30.25 30.38 30.21 29.78 29.75 29.96
  2005 30.00 30.01 30.18 30.11 30.36 30.12 30.12 30.20 30.43 30.47 30.39 30.02
  2006 30.34 30.12 30.34 30.55 30.66 30.70 30.58 30.53 30.35 30.38 30.30 30.41
  2007 30.87 30.75 30.32 30.77 30.60 30.54 30.29 30.31 30.33 30.04 30.02 30.29
  2008 30.50 30.42 30.25 30.56 30.22 30.18 29.90 29.99 30.44 30.13 29.97 29.99
  2009 30.01 30.15 30.18 30.20 30.35 30.12 30.17 30.37 30.54 30.64 30.46 30.85
  2010 30.58 30.98 30.27 30.67 30.29 30.51 30.05 30.24 30.48 30.50 30.72 30.47
  2011 30.02 30.53 30.65 30.45 30.65 30.68 30.38 30.39 30.13 30.33 30.39 30.73
  2012 31.08 30.82 30.59 30.53 30.77 30.83 30.63 30.64 30.79 30.96 30.33 31.06
  2013 30.75 30.58 30.56 30.22 30.58 30.37 30.48 30.08 30.51 30.60 30.47 30.64
  2014 31.05 31.75 31.63 31.64 31.78 31.61 31.66 31.29 31.44 31.39 31.31 31.52
  2015 31.41 31.47 31.70 31.94 31.40 31.74 31.48 31.43 31.16 31.35 31.41 31.03
  2016 31.46 31.25 31.19 31.47 31.60 31.38 31.19 31.10 31.14 31.35 31.52 31.14
  2017 31.23 31.42 31.60 31.76 32.04 31.98 32.34 31.92 31.80 31.88 31.70 32.05
  2018 32.28 32.55 31.89 31.99 32.24 32.12 32.15 31.81 32.10 32.52 32.25 32.28
  2019 32.40 33.09 33.03 32.97 33.14 32.70 32.62 32.68 33.32 33.20 32.93 33.14
  2020 33.18 33.13 32.98 32.43 32.84 32.50 32.68 32.88 33.56 33.38 33.60 33.16
  2021 33.62 33.32 33.20 33.02 33.50 33.43 33.07 33.30 33.38 33.06 32.79 32.89
  2022 32.70 33.00 32.98 32.92 33.47 33.27 33.00 33.07 33.09 33.25 33.30 33.27
  2023 33.40 33.00 33.39 33.41 33.11 33.10 32.86 33.09 32.88 32.67 32.97 33.06
  2024 32.97

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 3/29/2024
Next Release Date: 4/30/2024

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