wavel.	cross sect.	error limit
-----------------------------------
344.0	1.13e-46	4.0e-48
360.97	5.12e-46	2.0e-47
380.32	3.3e-46		2.0e-47
446.43	6.18e-47	2.3e-48
476.83	7.36e-46	3.0e-48
532.8	1.36e-46	7.0e-48
577.7	1.32e-45	1.0e-47
630.1	8.1e-46		3.0e-47