wavel.	cross sect.	uncertainty

245	6.49e-18	3.87e-19
248	9.60e-18	8.50e-18
250	1.54e-17	1.16e-17
252	1.60e-17	6.44e-18
253	1.93e-17	7.34e-18
255	2.22e-17	9.15e-18
256	3.07e-17	1.06e-17
257	3.10e-17	9.92e-18
258	4.13e-17	1.68e-17
259	4.45e-17	1.53e-17
260	5.06e-17	1.01e-17
261	6.98e-17	1.62e-17
262	7.61e-17	1.25e-17
263	9.14e-17	1.24e-17
264	8.08e-17	1.10e-17
265	3.82e-17	6.70e-18
266	2.36e-17	4.25e-18
267	1.45e-17	6.83e-18
269	5.94e-18	3.48e-18
272	2.73e-18	7.72e-19
275	3.92e-20