wavel.	cross section	error limit

15.0	3.01e-18	1.49e-18
20.2	2.60e-18	1.12e-18
27.9	4.17e-18	7.44e-19
30.3	4.65e-18	1.12e-18
37.4	5.47e-18	1.86e-18
43.4	7.25e-18	7.44e-19
50.7	1.02e-17	5.58e-19
52.5	1.71e-17	3.72e-18
55.2	1.12e-17	5.58e-19
58.0	1.31e-17	7.44e-19
59.8	1.20e-17	1.49e-18
60.8	1.23e-17	7.44e-19
62.5	1.54e-17	7.44e-19
68.5	1.27e-17	1.86e-18
70.2	1.31e-17	1.49e-18
76.0	1.37e-17	1.12e-18
79.0	1.05e-17	5.58e-19
83.5	2.01e-18	3.72e-19
99.0	6.03e-18	1.30e-18