wavel.	cross sect.	uncertainty	

300	5.81e-21	1.6e-22
305	2.78e-21	1.2e-22
310	1.28e-21	4.0e-23
315	5.80e-22	2.8e-23
320	2.71e-22	1.2e-23
325	1.17e-22	1.8e-23
330	5.15e-23	6.8e-24
335	2.31e-23	5.2e-24
340	1.06e-23	4.0e-24