wavel.	cross sect.	error limit
-----------------------------------
343.95	1.07e-46	4.0e-48
360.97	4.86e-46	4.0e-48
380.32	3.10-46		2.0e-47
446.48	5.87e-47	1.4e-48
476.98	7.01e-46	6.0e-48
532.7	1.27e-46	7.0e-48
577.7	1.23e-45	1.0e-47
630.1	7.69e-46	3.0e-47