wavel.	cross sect.	error limit

83.268	4.06e-17	1.6e-18
83.2757	3.82e-17	1.5e-18
83.3329	1.84e-17	8.0e-19
83.3742	1.43e-17	7.0e-19
83.4465	1.44e-17	7.0e-19