1000/	dofs	u	sigma
1000	42931	262.26	89.641
900	46207	263.51	123.26
800	50305	260.87	94.685
700	55405	261.55	95.05
600 	70771	260.11	102.81
500	88747	268.69	106.8
400	121975	265.8	108.66
300	184651	260.44	124.5
200	367747	257.58	138.1
100	1287781	258.37	150.83
90	1558099	266.6	135.7
80	1962955	264.95	140.35
70	2526169	284.71	52.038
60	3391465	283.59	48.544
50	4869493	282.24	58.521