wavel.	cross sect.	uncertainty

300	9.28e-21	2.8e-22
305	4.68e-21	1.8e-22
310	2.14e-21	6.0e-23
315	1.06e-21	4.0e-23
320	5.14e-22	4.0e-23
325	2.70e-22	1.0e-23
330	1.29e-22	8.0e-24
335	6.26e-23	4.6e-24
340	3.12e-23	2.8e-24
345	1.49e-23	2.8e-24