wavel.	cross sect.	error limit
-----------------------------------
296.73	1.84e-20	0.08e-20
302.15	3.40e-20	0.12e-20
312.57	7.35e-20	0.24e-20
313.17	7.34e-20	0.24e-20
334.15	1.66e-20	0.07e-20