wavel.	cross sect.	error limit
-----------------------------------
343.85	9.5e-47		4.0e-48
360.97	4.42e-46	7.0e-48
380.32	2.56e-46	8.0e-48
446.43	5.52e-47	5.0e-49
476.88	6.75e-46	3.0e-48
532.7	1.11e-46	6.0e-48
577.5	1.13e-45	6.0e-47
630.1	7.27e-46	7.0e-48