wavel.	cross sect.	error limit (1 sigma)

290	1.85e-18	2.1e-19
295	1.59e-18	1.8e-19
300	1.48e-18	1.5e-19
305	1.09e-18	1.7e-19
310	1.31e-18	5.0e-20
315	1.30e-18	1.2e-19
320	1.00e-18	2.3e-19
325	4.7e-19		5.0e-20
330	4.5e-19		5.0e-20