wavel.	cross sect.	error limit
-----------------------------------
184.950	4.30e-18	0.01e-18
202.548	6.38e-19	0.02e-19
206.200	5.78e-19	0.02e-19
213.857	3.57e-19	0.01e-19
228.802	5.66e-19	0.01e-20