facF15 := [-4.2713080289897*x^2*y^2*z+5.3391339021497*y+5.3391609999022*x*y*z-\
4.2712909817416*x^2*y*z+3.2034825015061*x-3.2035035844987*x^2*y*z^2-3.20350394\
57355*x*y^2*z+5.3391461094692*z-.30626072582992e-4*x^3*y*z-4.2712891736518*x^2
-5.3391358572326*x^3-2.1356749963078*x^5+1.0678370703763*x^4+3.2035022390089*y
^5-3.2034786440566*y^3-1.0678192839029*y^2-3.2034674237865*x^2*y^3-1.067846524\
5258*y^4-5.3391832381454*x^2*y^2+4.2713190420734*x^2*y+3.2034814213244*x*y^4-4\
.2713022487466*x*y^3-1.0678191192059*x*y^2-4.2712922679804*x^3*y+4.27129663498\
68*x^3*y^2-.12956110866080e-4*x*y+2.1356689542979*x^4*y-1.0677879408428*x*y*z^
3+2.1356648659171*x*y^3*z+4.2713168245901*x*y^2*z^2-1.0678236165335*x*y*z^2+2.\
1356529748492*z^4+5.3391502469686*z^3-2.1357061845460*z^2-1.0678135281173*z^5-
.20578457921239e-4*y*z^4-.41133602915983e-4*y^2*z-5.3391759757402*x^3*z+1.0678\
568882656*x^2*z+2.1356878265173*y^4*z+3.2034957501190*y*z^2-2.1357016304470*y*
z+4.2712801188389*x^3*z^2-3.2034996126295*x^2*z^3+2.1356411748305*x^2*z^2+1.06\
78361597656*y^2*z^2+4.2713346067630*y*z^3+5.3391603233427*x*z^4-3.203477534128\
3*x*z^3+4.2713395320372*x*z^2-1.0678237042394*y^3*z^2-5.3391419533536*y^2*z^3+
5.3391393934877*y^3*z+1.0678424052880*x*z+.48448240781838e-5*x^4*z-.\
48231172194860e-5, -3.7459162702077*x^2*y^2*z-4.6824058696611*y-2.809417437903\
8*x*y*z-1.8729393252049*x^2*y*z-3.7458908382115*x+2.8094624855260*x^2*y*z^2-4.\
6824288227508*x*y^2*z-4.6824074162042*z+2.8094217781558*x^3*y*z+4.682394933817\
7*x^2-.18569251314604e-4*x^3-.77539255790519e-5*x^5-.12493772231276e-4*x^4+4.6\
824227968208*y^5-1.8729309662715*y^3-.18509984836808e-4*y^2+4.6824043950862*x^
2*y^3+3.7459116000268*y^4+2.8094487301807*x^2*y^2+4.6824207565966*x^2*y+4.6823\
825413382*x*y^4+1.8729747219994*x*y^3-.93647697189051*x*y^2+1.8729887013546*x^
3*y-3.7458871994566*x^3*y^2+.18751037706200e-4*x*y-.93650163462980*x^4*y-.\
22267870198886e-4*x*y*z^3+2.8094551992369*x*y^3*z-4.6823855334551*x*y^2*z^2+2.\
8094819772998*x*y*z^2-3.7458899276489*z^4-4.6823580519680*z^3-4.6824028836547*
z^2-2.8094418858634*z^5+4.6823908706172*y*z^4-.93646379642153*y^2*z-.936476376\
52672*x^3*z-.93650112636537*x^2*z+.93645842475985*y^4*z-4.6823897645087*y*z^2-\
2.8094391549339*y*z+3.7459052151968*x^3*z^2-2.8094508272545*x^2*z^3+3.74592572\
44896*x^2*z^2+4.6824013311365*y^2*z^2-1.8729608379552*y*z^3-2.8094116907202*x*
z^4-2.8094502777873*x*z^3-1.8729262488001*x*z^2+1.8729776902932*y^3*z^2+1.8729\
945638799*y^2*z^3+.12474752627443e-4*y^3*z+2.8094290690972*x*z-2.8094129602461
*x^4*z-1.8729802201588];
t15n := 574.451;
berror15 := .79096815066671e-5;