Index: test/sansmodels/test/ellipsoid_testdata.txt
===================================================================
--- test/sansmodels/test/ellipsoid_testdata.txt	(revision 5777106e8a4a0a62fe2ee0fbaf7c0aa19c0bb92b)
+++ test/sansmodels/test/ellipsoid_testdata.txt	(revision 5777106e8a4a0a62fe2ee0fbaf7c0aa19c0bb92b)
@@ -0,0 +1,136 @@
+pythonclass = EllipsoidModel
+scale = 1
+radius_a = 20
+radius_b = 400
+contrast = 3e-6
+background = 0.01
+
+DATA
+0.001	11808.8528968632
+0.00105251266011778	11781.7147338649
+0.00110778289970821	11751.726514487
+0.00116595552660488	11718.5978599118
+0.00122718295288593	11682.01083219
+0.00129162559419317	11641.6177848645
+0.00135945229002046	11597.0391584392
+0.00143084074607265	11547.8612513417
+0.00150597799985384	11493.6340074247
+0.00158506091070502	11433.8688737723
+0.00166829667557485	11368.0367979944
+0.00175590337187494	11295.5664527249
+0.00184811052884188	11215.8427971077
+0.00194515972890305	11128.2061110769
+0.00204730524062173	11031.951668581
+0.00215481468487986	10926.3302508532
+0.00226796973604376	10810.5497404861
+0.00238706685995004	10683.7780812871
+0.00251241809064502	10545.1479370896
+0.00264435184791283	10393.7634337298
+0.00278321379773411	10228.7094202917
+0.00292936775792964	10049.0637353733
+0.00308319665136179	9853.91300696029
+0.00324510350919104	9642.37254402161
+0.00341551252681621	9413.61088528121
+0.00359487017526494	9166.879543996
+0.00378364637094618	8901.54841182498
+0.00398233570682956	8617.14714114096
+0.00419145874827721	8313.41259076583
+0.0044115633969232	7990.34206915047
+0.00464322632617388	7648.25161351986
+0.00488705449209019	7287.83787614165
+0.0051436867236104	6910.24132742693
+0.0054137953962797	6517.10741990347
+0.00569808819387176	6110.64109931719
+0.00599730996251769	5693.64864736002
+0.00631224466220038	5269.55939642207
+0.00664371742072679	4842.41854557534
+0.00699259669556001	4416.8413977311
+0.00735979654917468	3997.91920819247
+0.00774627904389752	3591.06797139074
+0.00815305676250721	3201.81444399825
+0.00858119546119774	2835.51908599765
+0.00903181686185589	2497.04384279986
+0.00950610159096858	2190.38388293401
+0.0100052922728602	1918.29597467291
+0.010530696785364	1681.97052793915
+0.0110836916864573	1480.80647627844
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+0.0238833016086589	293.695004896232
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+0.0293091805927793	186.837277235271
+0.0308482836315787	167.70997478874
+0.0324682090651407	150.021720507628
+0.0341732010924115	133.469048132347
+0.035967726786514	118.660929907549
+0.0378564877984635	105.851355256071
+0.0398444326754772	94.3663066816175
+0.0419367698261504	83.6578396413674
+0.0441389811664687	74.0303846471908
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+0.0488964085467568	58.0126389704112
+0.0514640890297529	51.0164068972012
+0.0541666052452436	44.9003014032841
+0.0570110377762212	39.3721336546038
+0.0600048390259259	34.3529627586149
+0.0631558527431166	29.958497372189
+0.0664723345726646	25.9550620560306
+0.0699629736853145	22.4261198409402
+0.0736369155432808	19.2679866604944
+0.0775037858613269	16.4682212334822
+0.0815737158261042	13.9888621639924
+0.085857368639825	11.805997960264
+0.0903659674578153	9.88077806606173
+0.0951113247931421	8.21127352905187
+0.100105873465356	6.74958811344309
+0.105362699174436	5.49602638898874
+0.110895574785276	4.42590111015658
+0.116718996412541	3.51634335501236
+0.122848221400442	2.7564115317264
+0.129299308296917	2.13145505928053
+0.136089158926978	1.62491960968472
+0.143235562675425	1.22192025374086
+0.150757243094979	0.908755828531692
+0.158673906961919	0.672118368226188
+0.167006295907771	0.499015180776053
+0.175776240762306	0.376993265291224
+0.185006718750238	0.294475487249178
+0.194721913691476	0.240999006101438
+0.20494727936264	0.206976804274189
+0.215709606185875	0.184084804995347
+0.227037091419654	0.166799187053838
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+0.341912864828804	0.0396251834721476
+0.359867618889456	0.0210274910924806
+0.378765224847594	0.0199010559646776
+0.398655194364451	0.0279754666458064
+0.4195896390903	0.0319472487548983
+0.441623407196792	0.0268350754071031
+0.464814227078974	0.0181555013515734
+0.489222858603482	0.0134732506169512
+0.514913252299177	0.0143447123658664
+0.541952716907305	0.0163992637354073
+0.570412095730168	0.0156477366167964
+0.600365952240318	0.012898427036931
+0.631892765436603	0.0114950061180364
+0.665075135458861	0.0126814563174163
