function composition (fuel, chemical)
{
   var mf = 0;

 if (fuel=="87octanelowmtbe")
   {
    if (chemical=="mtbe") {mf = .00454}
    if (chemical=="benzene") {mf = .00845}
    if (chemical=="toluene") {mf = .0415}
    if (chemical=="ethylbenzene") {mf = .00949}
    if (chemical=="p-xylene") {mf = .0105}
    if (chemical=="m-xylene") {mf = .0286}
    if (chemical=="o-xylene") {mf = .0142}
    if (chemical=="totalxylene") {mf = 0.0533}
   }

if (fuel=="87octanelownonmtbe")
   {
    if (chemical=="mtbe") {mf = 0}
    if (chemical=="benzene") {mf = 0.00849}
    if (chemical=="toluene") {mf = 0.0416}
    if (chemical=="ethylbenzene") {mf = 0.00953}
    if (chemical=="p-xylene") {mf = 0.0105}
    if (chemical=="m-xylene") {mf = 0.0287}
    if (chemical=="o-xylene") {mf = 0.0143}
    if (chemical=="totalxylene") {mf = 0.0535}
   }

if (fuel=="87octanegasoline")
   {
    if (chemical=="mtbe") {mf = 0.1037}
    if (chemical=="benzene") {mf = 0.00703}
    if (chemical=="toluene") {mf = 0.0345}
    if (chemical=="ethylbenzene") {mf = 0.00886}
    if (chemical=="p-xylene") {mf = 0.00951}
    if (chemical=="m-xylene") {mf = 0.0254}
    if (chemical=="o-xylene") {mf = 0.0128}
    if (chemical=="totalxylene") {mf = 0.04771}
   }

if (fuel=="87octanenonmtbe")
   {
    if (chemical=="mtbe") {mf = 0}
    if (chemical=="benzene") {mf = 0.00784}
    if (chemical=="toluene") {mf = 0.0385}
    if (chemical=="ethylbenzene") {mf = 0.00987}
    if (chemical=="p-xylene") {mf = 0.0106}
    if (chemical=="m-xylene") {mf = 0.0283}
    if (chemical=="o-xylene") {mf = 0.0139}
    if (chemical=="totalxylene") {mf = 0.0528}
   }

 if (fuel=="89octanelowmtbe")
   {
    if (chemical=="mtbe") {mf = 0.0179}
    if (chemical=="benzene") {mf = 0.00812}
    if (chemical=="toluene") {mf = 0.0808}
    if (chemical=="ethylbenzene") {mf = 0.0146}
    if (chemical=="p-xylene") {mf = 0.0156}
    if (chemical=="m-xylene") {mf = 0.0391}
    if (chemical=="o-xylene") {mf = 0.0208}
    if (chemical=="totalxylene") {mf = 0.0755}
   }


if (fuel=="89octanelownonmtbe")
   {
    if (chemical=="mtbe") {mf = 0}
    if (chemical=="benzene") {mf = 0.00827}
    if (chemical=="toluene") {mf = 0.0822}
    if (chemical=="ethylbenzene") {mf = 0.0149}
    if (chemical=="p-xylene") {mf = 0.0159}
    if (chemical=="m-xylene") {mf = 0.0398}
    if (chemical=="o-xylene") {mf = 0.0212}
    if (chemical=="totalxylene") {mf = 0.0769}
   }


   if (fuel=="89octanegasoline")
   {
    if (chemical=="mtbe") {mf = 0.129}
    if (chemical=="benzene") {mf = 0.00726}
    if (chemical=="toluene") {mf = .0577}
    if (chemical=="ethylbenzene") {mf = 0.0115}
    if (chemical=="p-xylene") {mf = 0.0110}
    if (chemical=="m-xylene") {mf = 0.0264}
    if (chemical=="o-xylene") {mf = 0.0146}
    if (chemical=="totalxylene") {mf = 0.0520}
   }

if (fuel=="89octanenonmtbe")
   {
    if (chemical=="mtbe") {mf = 0}
    if (chemical=="benzene") {mf = 0.00834}
    if (chemical=="toluene") {mf = 0.0662}
    if (chemical=="ethylbenzene") {mf = 0.0132}
    if (chemical=="p-xylene") {mf = 0.0126}
    if (chemical=="m-xylene") {mf = 0.0303}
    if (chemical=="o-xylene") {mf = 0.0168}
    if (chemical=="totalxylene") {mf = 0.0597}
   }

 
if (fuel=="93octanegasoline")
    {
     if (chemical=="mtbe") {mf = 0.122}
     if (chemical=="benzene") {mf = .00398}
     if (chemical=="toluene") {mf = 0.0857}
     if (chemical=="ethylbenzene") {mf = .00987}
     if (chemical=="o-xylene") {mf = .0158}
     if (chemical=="m-xylene") {mf = .0260}
     if (chemical=="p-xylene") {mf = .0109}
     if (chemical=="totalxylene") {mf = 0.0527}
    }

if (fuel=="93octanenonmtbe")
    {
     if (chemical=="mtbe") {mf = 0}
     if (chemical=="benzene") {mf = 0.00453}
     if (chemical=="toluene") {mf = 0.0982}
     if (chemical=="ethylbenzene") {mf = 0.0113}
     if (chemical=="o-xylene") {mf = 0.0181}
     if (chemical=="m-xylene") {mf = 0.0298}
     if (chemical=="p-xylene") {mf = 0.0125}
     if (chemical=="totalxylene") {mf = 0.0604}
    }

if (fuel=="93octanelowmtbe")
    {
     if (chemical=="mtbe") {mf = 0.0152}
     if (chemical=="benzene") {mf = 0.00603}
     if (chemical=="toluene") {mf = 0.12}
     if (chemical=="ethylbenzene") {mf = 0.0161}
     if (chemical=="o-xylene") {mf = 0.0172}
     if (chemical=="m-xylene") {mf = 0.0414}
     if (chemical=="p-xylene") {mf = 0.0232}
     if (chemical=="totalxylene") {mf = 0.0818}
    }

if (fuel=="93octanelownonmtbe")
    {
     if (chemical=="mtbe") {mf = 0}
     if (chemical=="benzene") {mf = 0.00612}
     if (chemical=="toluene") {mf = .1218}
     if (chemical=="ethylbenzene") {mf = 0.0163}
     if (chemical=="o-xylene") {mf = 0.0235}
     if (chemical=="m-xylene") {mf = 0.0420}
     if (chemical=="p-xylene") {mf = 0.0175}
     if (chemical=="totalxylene") {mf = 0.0830}
    }


   if (fuel=="diesel1")
    {
     if (chemical=="mtbe") {mf = 0}
     if (chemical=="benzene") {mf = 2.6E-5}
     if (chemical=="toluene") {mf = 2.7E-4}
     if (chemical=="ethylbenzene") {mf = 1.7E-4}
     if (chemical=="o-xylene") {mf = 4.2E-4}
     if (chemical=="m-xylene") {mf = -0.0001}
     if (chemical=="p-xylene") {mf = -0.0001}
     if (chemical=="totalxylene") {mf = 0.00302}
    }

   if (fuel=="diesel2")
    {
     if (chemical=="mtbe") {mf = 0}
     if (chemical=="benzene") {mf = 8.2E-5}
     if (chemical=="toluene") {mf = 8.3E-4}
     if (chemical=="ethylbenzene") {mf = 4.3E-4}
     if (chemical=="o-xylene") {mf = 7.4E-4}
     if (chemical=="m-xylene") {mf = -0.0001}
     if (chemical=="p-xylene") {mf = -0.0001}
     if (chemical=="totalxylene") {mf = 7.4E-4}
    }

 if (fuel=="dieselfueloil1994")
    {
     if (chemical=="mtbe") {mf = -.002}
     if (chemical=="benzene") {mf = 1.17E-5}
     if (chemical=="toluene") {mf = 0.00106}
     if (chemical=="ethylbenzene") {mf = 0.000306}
     if (chemical=="o-xylene") {mf = -7.4E-4}
     if (chemical=="m-xylene") {mf = -0.0001}
     if (chemical=="p-xylene") {mf = -0.0001}
     if (chemical=="totalxylene") {mf = 0.0032}
    }

if (fuel=="dieselfueloilalaska")
    {
     if (chemical=="mtbe") {mf = -0.002}
     if (chemical=="benzene") {mf = 2.73E-4}
     if (chemical=="toluene") {mf = 0.0018}
     if (chemical=="ethylbenzene") {mf = 0.00122}
     if (chemical=="o-xylene") {mf = -7.4E-4}
     if (chemical=="m-xylene") {mf = -0.0001}
     if (chemical=="p-xylene") {mf = -0.0001}
     if (chemical=="totalxylene") {mf = 0.0072}
    }





 return mf;

}

function fuelnote (fuel)
{
   var note = "";

   if (fuel=="87octanegasoline") {note = "1996 Long Island OxyFuel (MTBE) Gasoline";}
   if (fuel=="87octanelownonmtbe") {note="1996 Long Island non-compliant OxyFuel Gasoline: non-MTBE composition estimated by calculation"} 
   if (fuel=="87octanelowmtbe"){note="1996 Long Island non-compliant OxyFuel Gasoline";}
   if (fuel=="87octanenonmtbe") {note="1996 Long Island OxyFuel Gasoline: non-MTBE composition estimated by calculation"}
   
   if (fuel=="89octanegasoline") {note = "1996 Long Island OxyFuel (MTBE) Gasoline";}
   if (fuel=="89octanelownonmtbe") {note="1996 Long Island non-compliant OxyFuel Gasoline: non-MTBE composition estimated by calculation"}
   if (fuel=="89octanelowmtbe") {note="1996 Long Island non-compliant OxyFuel Gasoline";}
   if (fuel=="89octanenonmtbe")  {note = "1996 Long Island Gasoline: non-MTBE composition estimated by calculation from OxyFuel gasoline";}
  
   if (fuel=="93octanegasoline") {note = "1996 Long Island OxyFuel (MTBE) Gasoline";}
   if (fuel=="93octanelownonmtbe") {note="1996 Long Island non-compliant OxyFuel Gasoline: non-MTBE composition estimated by calculation"}
   if (fuel=="93octanelowmtbe") {note="1996 Long Island non-compliant OxyFuel Gasoline";}
   if (fuel=="93octanenonmtbe")  {note = "1996 Long Island Gasoline: non-MTBE composition estimated by calculation from OxyFuel gasoline";}
   

   if (fuel=="diesel1") {note="TPH Working Group background data set"}
   if (fuel=="diesel2") {note="TPH Working Group background data set"}
   if (fuel=="dieselfueloil1994") {note="Environment Canada on-line database"}
   if (fuel=="dieselfueloilalaska") {note="Environment Canada on-line database"}
    
   if (fuel=="other") {note = "User specified mass fraction; no composition data used";}

   return note;

}

function fuelmw (fuel)
{
   var mwoil = 0;

   if (fuel=="87octanegasoline") {mwoil=105;}
   if (fuel=="87octanelownonmtbe") {mwoil=105;}
   if (fuel=="87octanelowmtbe")  {mwoil=105;}
   if (fuel=="87octanenonmtbe") {mwoil=105;}

   if (fuel=="89octanegasoline") {mwoil=105;}
   if (fuel=="89octanelownonmtbe") {mwoil=105;}
   if (fuel=="89octanelowmtbe") {mwoil=105;}
   if (fuel=="89octanenonmtbe") {mwoil=105;}

   if (fuel=="93octanegasoline") {mwoil=105;}
   if (fuel=="93octanelownonmtbe") {mwoil=105;}
   if (fuel=="93octanelowmtbe") {mwoil=105;}
   if (fuel=="93octanenonmtbe") {mwoil=105;}

   if (fuel=="other") {mwoil=105;}

   if (fuel=="diesel1") {mwoil=233;}
   if (fuel=="diesel2") {mwoil=233;}
   if (fuel=="dieselfueloil1994") {mwoil=233;}
   if (fuel=="dieselfueloilalaska") {mwoil=233;}
   
   if (fuel=="93octanenonmtbe1") {mwoil=105;}
   if (fuel=="93octanenonmtbe2") {mwoil=105;}
   return mwoil;

}
function FuelDensity (fuel)
{
   var denso = 0;

   if (fuel=="87octanegasoline") {denso=0.72;}
   if (fuel=="87octanelownonmtbe") {denso=0.72;}
   if (fuel=="87octanelowmtbe")  {denso=0.72;}
   if (fuel=="87octanenonmtbe") {denso=0.72;}

   if (fuel=="89octanegasoline") {denso=0.72;}
   if (fuel=="89octanelownonmtbe") {denso=0.72;}
   if (fuel=="89octanelowmtbe") {denso=0.72;}
   if (fuel=="89octanenonmtbe") {denso=0.72;}

   if (fuel=="93octanegasoline") {denso=0.72;}
   if (fuel=="93octanelownonmtbe") {denso=0.72;}
   if (fuel=="93octanelowmtbe") {denso=0.72;}
   if (fuel=="93octanenonmtbe") {denso=0.72;}

   if (fuel=="other") {denso=0.72;}

   if (fuel=="diesel1") {denso=0.8;}
   if (fuel=="diesel2") {denso=0.8;}
   if (fuel=="dieselfueloil1994") {denso=0.8;}
   if (fuel=="dieselfueloilalaska") {denso=0.8;}
   
   if (fuel=="93octanenonmtbe1") {denso=0.72;}
   if (fuel=="93octanenonmtbe2") {denso=0.72;}

   return denso;

}