facF8 := [-1.8258689662138*y-2.7387865621551*x-4.5646675498844*x^2-4.564695629\
0211*x^3-.91292560152245*x^4-.28491755444576e-4*y^2-3.6517362793926*y^3+1.8258\
705729071*x^2*y^2-.91291253904907*x^2*y+3.6517091222136*x*y^3-3.6517099904859*
x*y^2-4.5646578010073*x^3*y+4.5646825841370*x*y+2.7388081626110*y^4-.\
12258932135387e-5, -1.4374895961059*y+2.8749317369532*x+3.5936709272290*x^2+2.\
8749566753375*x^3-2.1562264540181*x^4+3.5936375030459*y^2+.71873984602035*y^3-\
3.5936698886696*x^2*y^2-.71874395571557*x^2*y+1.4374680196741*x*y^3+1.43748754\
45517*x*y^2+1.4375004927916*x^3*y+.25054297029019e-4*x*y-1.4374532263859*y^4-3\
.5936672122450, -8.0143716468086*y-6.4114946693142*x-3.2057041410633*x^2-3.205\
7054503876*x^3+1.6028427264406*x^4+8.0142843642365*y^2+4.8086300517062*y^3-1.6\
028241568708*x^2*y^2+3.2057057787806*x^2*y-3.2057655009089*x*y^3+1.60284430777\
31*x*y^2+1.6028494380505*x^3*y+1.6029050964916*x*y-4.8086639278255*y^4+8.01436\
91277120, 1.1618893577645*y-5.8097227262472*x-.19750502622814e-4*x^2+4.6477446\
666664*x^3-2.3239396514051*x^4-1.1620495670360*y^2+1.1619222418663*y^3-2.32390\
21188411*x^2*y^2-5.8096998201808*x^2*y-2.3239230122079*x*y^3-5.8097533484059*x
*y^2-5.8097050484292*x^3*y-4.6477706345649*x*y+3.4858256608315*y^4-5.809770665\
8262, 1.6365979211971*y-.81826906283966*x+.81830159487950*x^2-.81829985530913*
x^3+4.0914892521385*x^4-1.6365788954673*y^2-.81826825430171*y^3-3.273212776428\
1*x^2*y^2-.21539111436734e-4*x^2*y+.81829280610303*x*y^3-.81827719391331*x*y^2
-.83694108937859e-5*x^3*y-3.2731563108779*x*y+3.2731963901766*y^4+3.2731817928\
090];
t8n := 5345.539;
berror8 := .85627247204869e-5;