wavel.	cross sect.	error limit
-----------------------------------
184.950	3.95e-18	0.01e-18
202.548	6.74e-19	0.03e-19
206.200	5.93e-19	0.02e-19
213.857	3.30e-19	0.01e-19
228.802	3.67e-19	0.02e-20