wavel.	cross sect.	error limit
-----------------------------------
446.52	5.20e-47	2.0e-48
477.02	6.598e-46	9.7e-48
532.7	1.09e-46	6.0e-48
577.6	1.12e-45	1.0e-47
630.2	7.11e-46	2.0e-48