wavel.		cross sect.	error limit

 748.721	4.314e-22	0.036e-22
 779.416	3.121e-22	0.025e-22
 817.224	2.159e-22	0.017e-22
 853.234	1.420e-22	0.011e-22
 898.247	6.21e-23	0.05e-23
 944.259	4.06e-23	0.03e-23
 991.841	3.8e-247	0.01e-24