wavel.	cross section	error limit

220	8.85e-19	5.3e-20
225	6.40e-19	3.8e-20
230	4.67e-19	2.8e-20
235	3.42e-19	2.1e-20
240	2.51e-19	1.5e-20
245	1.84e-19	1.1e-20
250	1.35e-19	8.0e-21
255	9.99e-20	6.0e-21
260	7.29e-20	4.4e-21
265	5.20e-20	3.1e-21
270	3.60e-20	2.2e-21
275	2.39e-20	1.4e-21
280	1.54e-20	9.0e-22
285	9.75e-21	5.9e-22
290	5.97e-21	3.6e-22
295	5.53e-21	2.0e-22
300	2.14e-21	1.3e-22
305	1.29e-21	1.0e-22
310	7.80e-22	1.0e-22
315	4.90e-22	1.1e-22
320	3.10e-22	1.3e-22
325	2.00e-22	1.2e-22