facF12 := [-1.6970341895405*y+1.6967647701390*x+.56975365584108*y^6*x^5+.56341\
039704459*x*y^9+.56606040369241*x^5*y^3-.56621911488145*x^6*y^3+.5665917736284\
2*x^2*y^6-.56654615544269*x^2*y^5+.56620104067755*x*y^6+.56748890992780*x^11*y
+.56633037863908*x^9*y^2-.56377833228382*x^4*y^2-.56583445452433*x*y^2-.563119\
45756674*x*y+.56418006565339*y^10*x+.56643460212564*y^9*x^3+.56518721761840*y^
11*x-.56526463597103*x^7*y^5+2.8220139239389*x^3*y^6-2.2650878792129*y^7*x^4-1\
.6948199360496*y^8*x^4-2.2636330968706*x^10*y^2-2.8330576038661*y^5*x^6-2.2629\
978530985*x^3*y^4+1.6974710202753*x^9*y-1.1281478864708*x^4*y^5+2.830424262679\
2*x^4*y^4-1.1304109615698*x^4*y^6-2.2658929996739*x^5*y^2-1.6986717197435*x^3+
1.6956189265680*y^6+2.8293065558714*y^7+1.1304854465576*y^5-2.2631938289312*y^
4+2.8237183157153*x^6+.56629018154465*y^8+2.2588886332638*x^12-1.1320924531489
*x^10+1.6967196696907*y^12+1.6964765510483*y^9+1.1322338906271*x^9+.5665445486\
3947*x^4-.70028721351570e-3*x^5+.56533724342776*x^7+2.8294791384977*x^8-.\
17845940099321e-3*x^2+1.1300224586246*y^10+.56349006312093*x^2*y^2-2.264956491\
0389*y^2+1.6955380041696*x^11+2.2621981990804*y^11-.26208233628839e-3*y^3+1.12\
65499073341*y^6*x^6+1.1311825538346*x^5*y^5-2.8316671479084*x^6*y^2-1.69516239\
24662*x^6*y-1.1295969506259*x^6*y^4-2.8295944310865*x^7*y+1.6946948595353*x^7*
y^3+1.7021594629940*x^7*y^2-2.2606895407073*x^7*y^4-2.2645123073855*x^8*y^2-2.\
2630777038536*x^8*y-2.8282739681954*x^2*y^8+2.2591493207558*x^2*y^7-1.69215103\
75727*x^3*y^7-2.8267153272299*x^3*y^5+1.6979427503496*x^4*y^3-2.8316539250367*
x^10*y+1.6957322576756*x*y^7+1.1343670338919*x*y^8-2.2636671182711*x^8*y^3-1.1\
338191088696*x^8*y^4-2.2598547649165*x^9*y^3-1.6986805709854*x^4*y-2.261329645\
8133*x^5*y+2.2612380372904*x^2*y+2.2658663042359*x^2*y^4-1.1320681303597*x^3*y
+2.8276837097872*x^3*y^2-2.2590593885582*x^3*y^3+1.6963087077226*x*y^3-2.26258\
76282643*x*y^4+2.8277603796259*y^8*x^3-2.8257707842440*y^9*x^2+2.8314771059869
*y^10*x^2-.22265059157081e-2*x^2*y^3-.91117158335580e-3*x*y^5+.45870255282055e\
-3*y^7*x^5+.12359356571304e-2*y^4*x^5+1.6980251442297, 3.2268066818514*y+6.453\
2567669900*x-4.8409848145065*x*y^2+1.6114698669873*x*y-6.4539640134881*x^3-8.0\
702554413195*y^5+6.4535321554834*y^4-6.4615818595714*x^4-6.4583105699316*x^5+3\
.2305847374621*x^2+8.0596758848734*x^2*y^2-1.6113027945199*y^2+8.0694323885335
*y^3+.44768526045533e-2*x^4*y+6.4504150828406*x^2*y+8.0677010364874*x^3*y+8.06\
66936404221*x^3*y^2-.61710761167956e-3*x*y^3+6.4562317731672*x*y^4+6.450606507\
9727*x^2*y^3+3.2241107437081, 3.2842534005736*y-.14446770277499e-2*x-4.3814769\
192779*x^2*y^5+5.4776342401667*x*y^6+1.0953754176892*x^4*y^2-3.2860113510214*x
*y^2-4.3839790079926*x*y-5.4806083925261*x^3*y^4-3.2868304395140*x^5*y^2-.\
11970812546485e-2*x^3+.53913699544200e-2*y^6+1.0936088680974*y^7-3.28628346680\
59*y^5+2.1924393611075*y^4+3.2874762767398*x^6-4.3808627912883*x^4+5.480055549\
2351*x^5-4.3828495283350*x^7-4.3841071679490*x^2+.11614775759596e-2*x^2*y^2-5.\
4789451829554*y^2+5.4755359477007*y^3-5.4797326291672*x^6*y-2.1957774268722*x^
4*y^3-1.0968192591642*x^4*y-2.1918766299056*x^5*y+4.3827526094404*x^2*y+2.1939\
732568510*x^2*y^4+1.0968449006233*x^3*y+4.3872103316997*x^3*y^2+4.381852989319\
7*x^3*y^3+2.1948353916559*x*y^3-4.3829583509138*x*y^4+2.1934686578639*x^2*y^3+
4.3820668117356*x*y^5-4.3820359801438];
t12n := 4288.727;
berror12 := .99999999999986, .76614065578151e-3;