facF18 := [Complex(9.6436526236662,-10.046412173354)*(Complex(.\
469395387882713748e-1,-.130704377524740178)*x^3*y^3+Complex(-.1592312920450620\
34,.237939046089604478)*x^3*y-Complex(.303291278032127132,.182701128088837900)
*x^2*y+Complex(.232882011306929537,.378757707039304114)*x^2*y^2-Complex(.17258\
6844745349716,.135761515162135082)*x^5*y-Complex(.279821523568309858,.24805327\
6687465158)*x*y^2-Complex(.303291250712631521,.182701085570366129)*x^4*y^2-
Complex(.125647374024397962,.266465939677700492)*x^2*y^3+Complex(.\
787078033931488674e-1,.397170388095557102)*x*y^3+Complex(.418823751025345290e-\
1,.888219293904295438e-1)*x*y^4+Complex(.350230820618564254,.\
519966883671796194e-1)*x^4*y+Complex(.125647358185993402,.266465940137408208)*
x*y+Complex(.266465980776642796,-.125647335200727766)*x^2*y^4+Complex(.1440599\
72065780195,.420640168483816745)*x*y^5+Complex(-.135761570241086038,.172586882\
588311313)*x^3*y^2-Complex(.36825277380902e-1,.30834842536875)*x^4+Complex(-.1\
5923129139507,.23793912379401)*x^3-Complex(.12564730303022,.26646599021386)*y+
Complex(.25635171675474,.31340552302816)-Complex(.78707770824816e-1,.397170447\
26403)*y^6+Complex(-.50570929564507e-2,.21952643178858)*y^2+Complex(.\
51996614526946e-1,-.35023083222223)*x+Complex(.14405998838494,.42064013155693)
*y^4-Complex(.10217754579299,.33181815656792)*x^5-Complex(.21446930946476,.224\
58351493773)*y^3+Complex(.32676108015951,.11734889340915)*x^2-Complex(.3502308\
3191649,.51996672992957e-1)*y^5+Complex(-.42064015384894,.14405997505558)*x^6)
+Complex(-.94847623770756e-7,-.26999888661528e-6)+Complex(-.20304937844614e-6,
.82946818379293e-6)*x^4*y^2+Complex(-.18151558655673e-6,.49600009876027e-6)*x^
3*y+Complex(.12007434048017e-5,.19507451418897e-6)*x*y^4+Complex(.\
50517143049585e-7,.45024595553782e-6)*y+Complex(.19717382994044e-7,-.\
45409034113363e-6)*x-Complex(.23221627756978e-6,.17581055146531e-6)*x^2+
Complex(.49994205035133e-6,-.82907987527827e-6)*x^2*y^3+Complex(.\
70586059941508e-7,.40653748400076e-6)*x*y+Complex(.51081846801726e-7,-.\
14746974783504e-6)*y^2+Complex(.32967291160020e-7,-.11312529078157e-6)*x^3-
Complex(.23722148191139e-6,.15764623164824e-6)*x*y^2+Complex(.12239639547233e-\
6,-.12714928252141e-6)*y^3+Complex(-.13403931199981e-6,.88570631626789e-6)*x^4
+Complex(.40937010879910e-6,.49080342598619e-6)*x^2*y+Complex(-.33110249072777\
e-6,.43439997519556e-6)*x^2*y^2-Complex(.32796352822718e-6,.19069126846913e-6)
*x^5+Complex(-.52190066758447e-6,.34530475442836e-6)*x*y^3+Complex(.\
80703367858399e-7,-.77369018172733e-6)*x^4*y+Complex(.31650887687862e-6,-.\
38681038189220e-7)*y^4+Complex(.51943242255107e-6,-.60483460646970e-6)*x^3*y^2
+Complex(-.85647326631781e-7,.10680176879218e-6)*x^5*y+Complex(-.\
20736408967898e-7,.11219326261160e-6)*x^6+Complex(.19722011387119e-6,.\
43299011115329e-6)*y^5-Complex(.40818544525294e-6,.33416076504201e-6)*x^3*y^3+
Complex(-.27364673940035e-6,.29791365038335e-6)*x^2*y^4+Complex(.\
24954508038894e-6,-.32484034547660e-6)*x*y^5+Complex(.26114303305554e-6,.\
29164067763208e-6)*y^6, Complex(.34702843286108e-6,.45618369332453e-6)*x^4*y+
Complex(-.21914697404569e-6,.38902287908416e-6)*x^3*y^2+Complex(.\
24704281165217e-6,-.15079668029800e-6)*x*y^4+Complex(.12887112798733e-5,-.\
46489929797458e-6)*x^2*y^3+Complex(.41152949056730e-6,-.16905966566518e-6)*x^6
+Complex(.10941109963086e-6,-.55836940310163e-6)*y^5+Complex(.36795172948519e-\
6,.11878571748167e-6)*x^5*y+Complex(.49771922524654e-7,-.20747340036327e-6)*x^
4*y^2+Complex(.51336748511114e-6,-.67747768319779e-8)*x^3*y^3+Complex(9.643652\
6236662,-10.046412173354)*(Complex(-.222201395456178702e-1,-.\
708571606085900002e-1)*x*y+Complex(.419664106856343106e-2,-.234791690555521544
)*x*y^5+Complex(-.212571509117413349,.666605175584494976e-1)*x^3*y+Complex(.12\
3690743969185682,-.350089187320011486)*x^4*y^2+Complex(-.283428706046404133,.\
888807047007673380e-1)*x*y^2+Complex(.972739726781377406e-1,-.1861547434595706\
14)*x^3*y^3+Complex(-.306133948942420922e-1,.398726220839353996)*x^2*y+
Complex(-.190351271964930097,.137517658644133956)*x^4*y+Complex(-.332065702444\
768018,.181958021044722862)*x^2*y^3+Complex(.115297520953722088,.1194941526032\
72146)*x*y^4+Complex(-.419668094371145310e-2,.234791678897177392)*x^2*y^4+
Complex(.306134095266880000e-1,-.398726182613098890)*x^5*y+Complex(-.\
750536987571723685e-1,.257011763586021902)*x^2*y^2+Complex(.279231919408803596
,.145910978720813906)*x*y^3+Complex(.372309404119537169,.194547893696297020)*x
^3*y^2+Complex(.18023576413866e-1,.30564886302179)*y^6+Complex(.30564881445359
,-.18023556687950e-1)*y^4+Complex(-.26120844307891,.15973790624490)*x^5+
Complex(-.66660561451786e-1,-.21257143106245)+Complex(.25281520846727,.3098454\
5284682)*y^5+Complex(-.30564886734579,.18023598280429e-1)*x^2+Complex(.3014522\
2442651,.21676808941142)*y^2+Complex(-.16813112504462,.20837486853150)*x^3+
Complex(.93077363663422e-1,.48637023009211e-1)*y^3+Complex(.37650596407981,-.\
40243757787238e-1)*x^4+Complex(.42094633252945,.10147054056908)*x^6+Complex(.2\
1676804457055,-.30145219908760)*x+Complex(-.37650599456112,.40243741846663e-1)
*y)+Complex(-.56553185966659e-6,-.36143851667000e-6)+Complex(.36836063096137e-\
6,-.11159579249912e-5)*x*y^3+Complex(.39320475478845e-6,-.86789580895102e-6)*x
^2*y^4+Complex(.34455962690363e-7,-.54909520225234e-6)*x+Complex(.\
15598064898693e-6,.27827917430442e-6)*y+Complex(-.23240670304540e-6,.\
66725049528566e-6)*x*y+Complex(.85318370085387e-7,-.37566050885136e-6)*x^2+
Complex(.20014362550279e-6,.15451513111298e-6)*y^2+Complex(.32175657977211e-6,
.60426864468436e-6)*x*y^5+Complex(.35665656866636e-6,.10821920649209e-6)*x^3-
Complex(.78010592854661e-6,.14549079750088e-6)*x^2*y+Complex(.11166855645659e-\
5,.11907609147526e-7)*x*y^2+Complex(-.35626815494945e-6,.24852106916966e-7)*y^
3+Complex(.38314815587865e-6,.14682908601149e-6)*x^4+Complex(.59411995707180e-\
6,-.19907569772154e-6)*x^3*y+Complex(.15029162662274e-6,.16130389091991e-5)*x^
2*y^2-Complex(.12187518123979e-6,.40993413583045e-6)*y^6+Complex(.\
45268319899663e-6,-.29237235209295e-6)*y^4+Complex(-.17681824932346e-6,.\
19310761895152e-6)*x^5];
t18n := 53.203;
berror18 := .50997168558127e-7;