wavel.	cross sect.	error limit
----------------------------------
296.73	1.63e-20	0.03e-20
302.15	3.24e-20	0.03e-20
312.57	6.75e-20	0.03e-20
313.17	7.62e-20	0.18e-20
334.15	1.57e-20 	0.02e-20