Department of Defense World Geodetic System 1966 Thanks to Paul Willmott, who sent us the coefficients. product_type gravity_field modelname WGS66 earth_gravity_constant 0.3986009E+15 radius 0.6378145E+07 max_degree 24 errors no key L M C S end_of_head ================================ gfc 0 0 1.00000000e+00 .00000000e+00 gfc 2 0 -.48420500e-03 .00000000e+00 gfc 2 1 -.71380000e-07 .16630000e-07 gfc 2 2 .25060000e-05 -.14670000e-05 gfc 3 0 .99410000e-06 .00000000e+00 gfc 3 1 .18540000e-05 .25710000e-06 gfc 3 2 .85750000e-06 -.57600000e-06 gfc 3 3 .61430000e-06 .14870000e-05 gfc 4 0 .78320000e-06 .00000000e+00 gfc 4 1 -.61730000e-06 -.45410000e-06 gfc 4 2 .30080000e-06 .63450000e-06 gfc 4 3 .90090000e-06 -.23470000e-06 gfc 4 4 -.34260000e-07 .21720000e-06 gfc 5 0 .79920000e-07 .00000000e+00 gfc 5 1 -.82890000e-07 -.40190000e-07 gfc 5 2 .67370000e-06 -.21370000e-06 gfc 5 3 -.36460000e-06 -.14030000e-06 gfc 5 4 .70980000e-07 .72260000e-08 gfc 5 5 .14560000e-06 -.47540000e-06 gfc 6 0 -.18310000e-06 .00000000e+00 gfc 6 1 -.12300000e-06 .33530000e-08 gfc 6 2 .47960000e-07 -.39510000e-06 gfc 6 3 .93240000e-07 .16660000e-06 gfc 6 4 -.48150000e-07 -.48160000e-06 gfc 6 5 -.16090000e-06 -.51550000e-06 gfc 6 6 -.19090000e-07 -.19550000e-06 gfc 7 0 .11910000e-06 .00000000e+00 gfc 7 1 .16960000e-07 .30610000e-07 gfc 7 2 .19120000e-06 .48920000e-07 gfc 7 3 .55450000e-07 .19950000e-07 gfc 7 4 -.23770000e-06 .12890000e-06 gfc 7 5 -.53130000e-07 -.97590000e-07 gfc 7 6 -.17230000e-06 .15790000e-06 gfc 7 7 .36070000e-07 .40310000e-07 gfc 8 0 -.12920000e-06 .00000000e+00 gfc 8 1 .52640000e-07 -.63600000e-07 gfc 8 2 .18860000e-06 -.37640000e-08 gfc 8 3 .47550000e-07 .33710000e-07 gfc 8 4 .79450000e-08 -.99320000e-07 gfc 8 5 -.11290000e-06 .46900000e-07 gfc 8 6 .58970000e-08 .17700000e-06 gfc 8 7 .13240000e-07 .17990000e-07 gfc 8 8 -.12120000e-06 -.34020000e-07 gfc 9 0 .55900000e-07 .00000000e+00 gfc 9 1 .69390000e-07 -.51220000e-07 gfc 9 2 -.78500000e-09 .28830000e-08 gfc 9 3 -.60700000e-07 .21670000e-07 gfc 9 4 -.90380000e-08 -.21840000e-07 gfc 9 5 -.11680000e-06 .10580000e-06 gfc 9 6 .87150000e-08 .74650000e-07 gfc 9 7 .33490000e-07 .13260000e-07 gfc 9 8 .16730000e-06 .49840000e-07 gfc 9 9 .70000000e-07 .87650000e-08 gfc 10 0 -.70910000e-07 .00000000e+00 gfc 10 1 .12420000e-06 -.11350000e-07 gfc 10 2 -.41060000e-07 -.13600000e-06 gfc 10 3 -.10570000e-06 -.13510000e-06 gfc 10 4 -.17120000e-07 -.11630000e-07 gfc 10 5 .84440000e-08 .53160000e-08 gfc 10 6 -.59610000e-07 -.27150000e-07 gfc 10 7 -.15500000e-07 -.82940000e-10 gfc 10 8 .89770000e-07 -.52280000e-07 gfc 10 9 .10340000e-06 -.17890000e-07 gfc 10 10 .67190000e-07 .94610000e-08 gfc 11 0 -.66750000e-07 .00000000e+00 gfc 11 1 -.10160000e-07 -.10380000e-06 gfc 11 2 .54650000e-07 -.20160000e-07 gfc 11 3 .75130000e-07 -.35710000e-07 gfc 11 4 -.41350000e-08 -.13660000e-08 gfc 11 5 .12600000e-07 -.26640000e-07 gfc 11 6 .61660000e-07 .15970000e-07 gfc 11 7 -.57720000e-07 -.49200000e-07 gfc 11 8 .66840000e-07 -.28670000e-07 gfc 11 9 .31480000e-08 .68630000e-07 gfc 11 10 -.12880000e-07 -.59520000e-07 gfc 11 11 .11510000e-06 .93060000e-07 gfc 12 0 -.57620000e-07 .00000000e+00 gfc 12 1 .25570000e-08 -.70930000e-07 gfc 12 2 .86190000e-07 .88600000e-07 gfc 12 3 .31280000e-07 .11300000e-06 gfc 12 4 .18510000e-08 -.28960000e-08 gfc 12 5 .56790000e-07 -.29800000e-08 gfc 12 6 .32910000e-07 -.98230000e-08 gfc 12 7 -.63390000e-07 .15640000e-07 gfc 12 8 -.26620000e-09 -.21150000e-07 gfc 12 9 .21750000e-07 .57180000e-07 gfc 12 10 -.19690000e-07 .70100000e-08 gfc 12 11 -.16190000e-07 .25350000e-07 gfc 12 12 -.64790000e-07 .48120000e-07 gfc 13 0 .41190000e-07 .00000000e+00 gfc 13 1 -.54390000e-07 .19770000e-07 gfc 13 2 -.23140000e-07 .18450000e-07 gfc 13 3 .23260000e-08 .63490000e-07 gfc 13 4 -.80960000e-08 -.41680000e-07 gfc 13 5 .31410000e-07 .42640000e-07 gfc 13 6 -.51600000e-07 .82650000e-08 gfc 13 7 .10620000e-07 .21650000e-07 gfc 13 8 -.62730000e-07 -.18570000e-08 gfc 13 9 .33250000e-07 .51580000e-07 gfc 13 10 .42540000e-07 -.31470000e-07 gfc 13 11 -.85650000e-08 .98070000e-08 gfc 13 12 -.11830000e-07 .65780000e-07 gfc 13 13 -.51810000e-07 .20850000e-08 gfc 14 0 -.22330000e-08 .00000000e+00 gfc 14 1 .22640000e-08 .23910000e-07 gfc 14 2 .84510000e-08 -.20370000e-07 gfc 14 3 .50820000e-07 -.28350000e-07 gfc 14 4 .15130000e-07 -.36120000e-07 gfc 14 5 .38150000e-07 -.11160000e-07 gfc 14 6 -.10750000e-07 -.90230000e-08 gfc 14 7 .19230000e-07 .32240000e-08 gfc 14 8 -.17970000e-07 -.25530000e-07 gfc 14 9 .20000000e-07 .72120000e-07 gfc 14 10 .27780000e-07 .24520000e-07 gfc 14 11 .33190000e-07 .34040000e-08 gfc 14 12 .34960000e-07 -.18590000e-07 gfc 14 13 -.99560000e-08 .35170000e-07 gfc 14 14 -.50870000e-07 .19920000e-08 gfc 15 0 -.18290000e-07 .00000000e+00 gfc 15 1 .42980000e-07 .35100000e-08 gfc 15 2 -.17560000e-07 -.27210000e-07 gfc 15 3 .82940000e-08 .24020000e-07 gfc 15 4 .28780000e-07 .39530000e-07 gfc 15 5 .41300000e-07 -.39010000e-07 gfc 15 6 .49030000e-07 -.51780000e-07 gfc 15 7 .39670000e-07 .49190000e-07 gfc 15 8 -.54160000e-07 -.30120000e-07 gfc 15 9 -.64770000e-08 .54180000e-07 gfc 15 10 -.17930000e-07 .22160000e-07 gfc 15 11 -.26360000e-07 .46400000e-09 gfc 15 12 -.52300000e-07 .34040000e-07 gfc 15 13 .23830000e-08 .51110000e-07 gfc 15 14 .12760000e-07 -.19600000e-07 gfc 15 15 -.12780000e-08 -.15820000e-08 gfc 16 0 -.28980000e-07 .00000000e+00 gfc 16 1 -.11730000e-08 -.10970000e-07 gfc 16 2 .11310000e-07 .47430000e-07 gfc 16 3 -.63420000e-08 .22700000e-07 gfc 16 4 .48470000e-07 .38440000e-07 gfc 16 5 -.30460000e-07 -.17830000e-07 gfc 16 6 -.11930000e-07 -.28140000e-07 gfc 16 7 .46600000e-07 -.52710000e-08 gfc 16 8 -.26260000e-07 -.23530000e-07 gfc 16 9 -.16110000e-07 -.45000000e-07 gfc 16 10 -.19770000e-07 -.15990000e-07 gfc 16 11 -.15830000e-08 -.21490000e-07 gfc 16 12 -.77090000e-08 -.14930000e-07 gfc 16 13 -.10320000e-07 -.19090000e-07 gfc 16 14 -.30520000e-07 -.14570000e-07 gfc 16 15 -.31250000e-07 .70840000e-08 gfc 16 16 -.20340000e-07 .24400000e-07 gfc 17 0 .38220000e-07 .00000000e+00 gfc 17 1 -.30270000e-07 -.21450000e-07 gfc 17 2 .80150000e-08 .43730000e-07 gfc 17 3 .37030000e-08 -.21440000e-07 gfc 17 4 .27060000e-07 .33940000e-08 gfc 17 5 -.37590000e-08 .31960000e-09 gfc 17 6 -.34100000e-07 -.12560000e-07 gfc 17 7 .27160000e-07 -.91750000e-08 gfc 17 8 .19070000e-07 .16720000e-07 gfc 17 9 .74290000e-08 -.16720000e-07 gfc 17 10 .34300000e-08 -.87570000e-08 gfc 17 11 .51820000e-08 .38720000e-08 gfc 17 12 .90800000e-08 -.20320000e-07 gfc 17 13 .30750000e-07 -.11700000e-08 gfc 17 14 -.18530000e-08 .24500000e-07 gfc 17 15 .79860000e-08 .19610000e-07 gfc 17 16 -.18910000e-07 -.55370000e-08 gfc 17 17 -.53610000e-07 -.20460000e-07 gfc 18 0 -.11700000e-07 .00000000e+00 gfc 18 1 -.15430000e-07 -.27970000e-07 gfc 18 2 .37090000e-08 .41360000e-08 gfc 18 3 .60100000e-10 -.40630000e-07 gfc 18 4 .30940000e-07 -.12780000e-07 gfc 18 5 .26590000e-07 .10740000e-07 gfc 18 6 -.73120000e-08 -.38880000e-08 gfc 18 7 .18980000e-08 .17520000e-07 gfc 18 8 .18850000e-07 .13080000e-08 gfc 18 9 -.21060000e-07 .10530000e-07 gfc 18 10 -.10970000e-07 .30080000e-08 gfc 18 11 -.29230000e-08 .23590000e-07 gfc 18 12 .80360000e-08 -.24670000e-07 gfc 18 13 .16320000e-07 -.21820000e-07 gfc 18 14 -.77060000e-08 -.12560000e-07 gfc 18 15 -.32340000e-07 -.13820000e-07 gfc 18 16 .20020000e-07 .11560000e-07 gfc 18 17 -.95280000e-08 .16990000e-08 gfc 18 18 -.13780000e-07 -.47550000e-08 gfc 19 0 -.23510000e-07 .00000000e+00 gfc 19 1 -.22800000e-08 -.98890000e-08 gfc 19 2 .11170000e-07 -.20270000e-07 gfc 19 3 -.31390000e-07 .15160000e-08 gfc 19 4 .78290000e-09 -.20730000e-07 gfc 19 5 -.75590000e-08 .13930000e-07 gfc 19 6 -.13860000e-07 .10020000e-07 gfc 19 7 -.18310000e-07 .29400000e-08 gfc 19 8 .22810000e-07 -.21510000e-07 gfc 19 9 .86950000e-08 -.70240000e-08 gfc 19 10 -.16810000e-08 -.24100000e-08 gfc 19 11 .20330000e-07 .28580000e-09 gfc 19 12 -.15720000e-08 -.41440000e-08 gfc 19 13 .18860000e-08 -.11460000e-07 gfc 19 14 .16330000e-08 -.72470000e-08 gfc 19 15 -.16050000e-07 -.13060000e-07 gfc 19 16 .42710000e-08 .93260000e-08 gfc 19 17 .37780000e-07 -.10420000e-07 gfc 19 18 .18610000e-07 .51020000e-08 gfc 19 19 -.60040000e-08 -.24710000e-08 gfc 20 0 -.22070000e-07 .00000000e+00 gfc 20 1 -.13410000e-07 -.17130000e-07 gfc 20 2 -.42620000e-08 .32180000e-07 gfc 20 3 -.21310000e-07 .45620000e-09 gfc 20 4 -.17970000e-07 -.22890000e-07 gfc 20 5 -.13900000e-07 -.12970000e-07 gfc 20 6 -.87190000e-08 .78680000e-08 gfc 20 7 -.16800000e-07 -.59640000e-08 gfc 20 8 .23150000e-07 .96610000e-09 gfc 20 9 .26680000e-07 .48170000e-08 gfc 20 10 -.15510000e-07 .17240000e-08 gfc 20 11 .24790000e-07 -.14530000e-07 gfc 20 12 -.28350000e-08 .13660000e-08 gfc 20 13 .13840000e-07 .73880000e-08 gfc 20 14 .24680000e-08 -.26380000e-08 gfc 20 15 -.18460000e-07 .16760000e-08 gfc 20 16 -.10940000e-07 -.69420000e-08 gfc 20 17 -.86300000e-08 -.72150000e-08 gfc 20 18 -.92430000e-09 -.23280000e-08 gfc 20 19 .29610000e-07 .13810000e-07 gfc 20 20 -.30960000e-08 -.39940000e-08 gfc 21 0 .12480000e-07 .00000000e+00 gfc 21 1 -.62320000e-08 -.28790000e-08 gfc 21 2 .53680000e-08 .15530000e-07 gfc 21 3 -.41140000e-08 -.40560000e-08 gfc 21 4 -.29460000e-07 -.20260000e-07 gfc 21 5 -.35830000e-09 -.44590000e-08 gfc 21 6 .26650000e-08 -.23760000e-07 gfc 21 7 .64490000e-08 .19700000e-07 gfc 21 8 .29800000e-08 .18210000e-07 gfc 21 9 .19830000e-08 .31900000e-07 gfc 21 10 .11970000e-08 .10410000e-07 gfc 21 11 .73620000e-08 -.25950000e-07 gfc 21 12 .12260000e-08 .53890000e-08 gfc 21 13 .78060000e-08 .25460000e-07 gfc 21 14 .22030000e-08 .16150000e-07 gfc 21 15 .35260000e-08 .51910000e-08 gfc 21 16 -.84850000e-08 -.25460000e-07 gfc 21 17 .57450000e-08 .69300000e-08 gfc 21 18 .19820000e-07 .22890000e-08 gfc 21 19 -.11010000e-07 .45500000e-08 gfc 21 20 -.24680000e-07 .50960000e-08 gfc 21 21 -.70070000e-08 .81720000e-09 gfc 22 0 -.86700000e-08 .00000000e+00 gfc 22 1 .76710000e-08 .20960000e-07 gfc 22 2 .33770000e-08 -.11700000e-07 gfc 22 3 .62690000e-08 -.21720000e-07 gfc 22 4 -.54260000e-08 -.46420000e-08 gfc 22 5 .66870000e-08 .14590000e-07 gfc 22 6 .38980000e-08 -.11290000e-08 gfc 22 7 .14410000e-07 .16800000e-07 gfc 22 8 -.19070000e-07 .13240000e-07 gfc 22 9 -.48390000e-08 .13150000e-07 gfc 22 10 .18210000e-07 .87200000e-08 gfc 22 11 -.11510000e-08 -.53910000e-08 gfc 22 12 .58460000e-08 .42980000e-08 gfc 22 13 -.59820000e-08 .19080000e-07 gfc 22 14 .51250000e-08 .19290000e-07 gfc 22 15 .78670000e-08 -.21170000e-07 gfc 22 16 .79060000e-08 -.24770000e-08 gfc 22 17 .16960000e-07 -.50900000e-08 gfc 22 18 .12220000e-08 -.19650000e-07 gfc 22 19 -.11240000e-07 .34220000e-08 gfc 22 20 -.17280000e-07 .52760000e-08 gfc 22 21 .43410000e-08 .48770000e-08 gfc 22 22 -.19580000e-07 -.67020000e-08 gfc 23 0 .14710000e-08 .00000000e+00 gfc 23 1 .11100000e-07 .17700000e-07 gfc 23 2 -.18030000e-07 -.21890000e-07 gfc 23 3 .51940000e-08 -.22430000e-07 gfc 23 4 -.37340000e-08 .68630000e-08 gfc 23 5 -.37460000e-08 .23390000e-07 gfc 23 6 -.17820000e-08 .11510000e-07 gfc 23 7 .94980000e-09 .33060000e-08 gfc 23 8 .24800000e-09 -.42140000e-08 gfc 23 9 .54400000e-08 -.82960000e-08 gfc 23 10 .18230000e-07 .17730000e-07 gfc 23 11 .89050000e-08 .19180000e-07 gfc 23 12 .18540000e-07 -.41930000e-08 gfc 23 13 -.26400000e-08 -.74330000e-08 gfc 23 14 -.50850000e-08 -.38330000e-08 gfc 23 15 .12720000e-07 .10930000e-08 gfc 23 16 .18120000e-07 .12020000e-07 gfc 23 17 .45810000e-08 -.62320000e-08 gfc 23 18 -.42820000e-08 -.12550000e-07 gfc 23 19 -.49700000e-08 -.26510000e-08 gfc 23 20 .10140000e-07 -.70040000e-08 gfc 23 21 .12930000e-07 .10180000e-07 gfc 23 22 -.14810000e-07 .15200000e-07 gfc 23 23 -.80730000e-08 -.14900000e-07 gfc 24 0 -.16920000e-07 .00000000e+00 gfc 24 1 .91630000e-08 .21560000e-07 gfc 24 2 -.49210000e-08 -.35360000e-09 gfc 24 3 -.27170000e-07 -.17530000e-07 gfc 24 4 -.12270000e-07 .18690000e-07 gfc 24 5 -.26500000e-07 .24410000e-07 gfc 24 6 .76700000e-08 .30330000e-08 gfc 24 7 .44100000e-09 .76320000e-08 gfc 24 8 .10010000e-07 -.10990000e-07 gfc 24 9 -.10890000e-07 .10830000e-07 gfc 24 10 .92270000e-08 .97930000e-08 gfc 24 11 .70580000e-08 .14290000e-07 gfc 24 12 .18810000e-07 -.72730000e-08 gfc 24 13 -.12080000e-07 -.20440000e-08 gfc 24 14 -.20680000e-07 .36150000e-08 gfc 24 15 .80830000e-08 .38110000e-08 gfc 24 16 .61390000e-08 -.73000000e-08 gfc 24 17 -.96000000e-08 -.94200000e-08 gfc 24 18 .27720000e-08 .57330000e-09 gfc 24 19 -.19070000e-07 -.24820000e-08 gfc 24 20 -.42450000e-08 -.25650000e-09 gfc 24 21 -.68370000e-08 .87780000e-08 gfc 24 22 -.58350000e-08 -.42190000e-08 gfc 24 23 .60030000e-08 -.22920000e-08 gfc 24 24 -.12740000e-08 -.11620000e-07