wavel.	cross section	error limit (1 sigma)

290	5.98e-21	2.7e-22 
295	4.09e-21	2.8e-22
300	2.59e-21	1.8e-22
305	1.68e-21	1.9e-22
310	0.95e-21	1.0e-23
315	5.1e-22		5.0e-23
320	4.7e-22		6.0e-23
325	2.1e-22		5.0e-23
330	1.9e-21		4.0e-23