Repetition	Blank (AU)	1 x 10-7 M Standard Solution (AU)	5 x 10-7 M Standard Solution (AU)	1 x 10-6 M Standard Solution (AU)	5 x 10-6 M Standard Solution (AU)	Unknown Sample (AU)
1	0.002	0.052	0.275	0.508	2.450	0.315
2	0.001	0.053	0.255	0.540	2.345	0.321
3	0.003	0.051	0.266	0.533	2.385	0.333
4	0.002	0.050	0.250	0.510	2.215	0.311
5	0.004	0.051	0.268	0.512	2.565	0.315

Using these data, I constructed a calibration curve to determine the concentration of my unknown. My unknown absorbance is 0.319 AU while my concentration is 0.000001 AU. What is the uncertainty of the concentration in the reported value at the 95% confidence interval. [Show all work]