Exhibit 99.16

   (Text of graph posted to Ashland Inc.'s website concerning Sour Crude
                               Differentials)


                       MAYA - WTI SPREADS ($, per barrel)

              1998        1999         2000        2001        2002         2003           2004          2005       1998-2004 Avg.
                                                                                             
January      -5.99       -4.69       -6.52       -11.26       -5.90        -5.33         -8.62         -17.26           -6.90
February     -5.57       -4.89       -6.24       -10.69       -5.77        -7.97         -9.83         -16.88           -7.28
March        -6.24       -4.99       -6.14       -10.35       -5.30        -9.28         -9.69         -17.57           -7.43
April        -4.97       -4.75       -5.78       -11.55       -4.28        -7.82         -8.69         -14.68           -6.84
May          -4.55       -5.01       -5.74       -11.02       -4.76        -6.32         -8.43         -11.11           -6.55
June         -4.24       -4.94       -6.74        -9.11       -4.06        -7.43         -8.70                          -6.46
July         -4.43       -4.81       -6.97        -8.02       -4.56        -5.84         -10.06                         -6.38
August       -4.60       -4.05       -7.53        -8.41       -5.46        -5.95         -12.25                         -6.89
September    -5.10       -4.70       -7.42        -6.40       -5.16        -6.13         -12.49                         -6.77
October      -4.84       -4.28       -7.60        -6.46       -5.07        -6.16         -14.28                         -6.96
November     -4.65       -5.43       -10.25       -6.75       -6.60        -6.79         -16.50                         -8.14
December     -4.78       -5.99       -10.50       -6.04       -6.58        -7.38         -17.29                         -8.36
Average      -5.00       -4.88       -7.29        -8.84       -5.29        -6.87         -11.40        -15.50           -7.08






                       Mars - WTI Spreads ($, per barrel)

             1998        1999         2000        2001        2002         2003           2004          2005        1998-2004 Avg.

                                                                                             
January      -3.20       -2.45       -3.52        -7.69       -2.17        -3.38         -4.12          -7.28           -3.79
February     -3.88       -2.64       -2.91        -7.53       -1.99        -5.39         -5.67          -6.66           -4.29
March        -3.88       -3.11       -3.91        -6.04       -2.08        -6.10         -4.62          -7.17           -4.25
April        -3.98       -2.70       -3.87        -5.58       -1.66        -4.09         -5.53          -6.62           -3.92
May          -3.16       -2.84       -3.83        -5.10       -2.78        -3.59         -4.38          -5.07           -3.67
June         -2.52       -3.35       -4.30        -3.48       -2.05        -3.73         -4.81                          -3.46
July         -2.29       -2.64       -4.41        -3.65       -1.94        -3.28         -5.04                          -3.32
August       -2.39       -1.90       -3.86        -5.02       -3.02        -3.13         -6.25                          -3.65
September    -2.47       -2.74       -4.91        -4.37       -2.47        -3.34         -7.04                          -3.91
October      -2.48       -2.67       -6.17        -4.29       -2.85        -3.10         -10.62                         -4.60
November     -3.31       -2.45       -5.87        -3.92       -4.46        -3.53         -9.04                          -4.65
December     -3.22       -2.85       -5.61        -2.89       -2.88        -2.82         -7.86                          -4.02
Average      -3.06       -2.69       -4.43        -4.96       -2.53        -3.79         -6.25          -6.56           -3.96