wavel.	cross section	error limit

215	2.80e-18	4.0e-19
220	3.35e-18	5.0e-19
225	3.85e-18	3.0e-19
230	4.14e-18	5.0e-19
235	4.20e-18	5.0e-19
240	4.17e-18	3.0e-19
245	3.92e-18	2.0e-19
250	3.56e-18	2.0e-19
255	3.10e-18	4.0e-19
260	2.68e-18	3.0e-19
265	2.15e-18	2.0e-19
270	1.58e-18	3.0e-19