wavel.	cross section	lower and upper error limits

340	1.21e-21	1.07e-21	1.32e-21
345	9.31e-22	8.05e-22	1.04e-21
350	7.11e-22	5.88e-22	8.26e-22
355	5.48e-22	4.28e-22	6.68e-22
360	4.27e-22	3.12e-22	5.50e-22
365	3.42e-22	2.31e-22	4.70e-22
370	2.70e-22	1.66e-22	3.99e-22
375	2.15e-22	1.17e-22	3.52e-22
380	1.80e-22	8.60e-23	3.25e-22
385	1.42e-22	5.60e-23	2.98e-22
390	1.22e-22	0.00		2.89e-22
395	1.06e-22	0.00		2.88e-22
400	9.38e-23	0.00		2.88e-22
405	8.46e-23	0.00		2.91e-22
410	8.10e-23	0.00		2.87e-22
415	7.03e-23	0.00		2.99e-22
420	6.56e-23	0.00		2.98e-22
425	6.60e-23	0.00		2.92e-22
430	5.42e-23	0.00		3.26e-22
435	8.03e-23	0.00		2.72e-22
440	6.56e-23	0.00		2.82e-22
445	7.18e-23	0.00		2.84e-22
450	9.31e-23	0.00		2.71e-22