wavel.	cross sect.	error limit
-----------------------------------
344.0	1.20e-46	4.0e-48
360.97	5.32e-46	2.0e-47
380.32	3.5e-46		3.0e-47
446.43	6.39e-47	1.5e-48
476.84	7.67e-46	2.0e-47
532.8	1.37e-46	6.0e-48
577.7	1.38e-45	1.0e-47
630.1	8.43e-46	2.0e-47