wavel.	cross sect.	standard deviation

253.65	1.147e-17	2.4e-19
289.36	1.47e-18	3.0e-20
296.73	5.971e-19	2.6e-21
302.15	2.860e-19	1.1e-21
334.15	4.27e-21	6.6e-23
576.96	4.76e-21	9.0e-23