wavel.	cross sect.	error limit
-----------------------------------
344.0	9.8e-47		4.0e-48
360.97	4.58e-46	7.0e-48
380.32	2.68e-46	8.0e-48
446.53	5.30e-47	2.0e-48
476.88	6.91e-46	4.0e-48
532.9	1.10e-46	6.0e-48
577.7	1.15e-45	1.0e-47
630.0	7.44e-46	3.0e-47