wavel. cross sect.	error limit

200	3.06e-18	0.37e-18
210	3.86e-18	0.44e-18
220	3.35e-18	0.43e-18
230	2.82e-18	0.36e-18
240	2.05e-18	0.41e-18
250	1.21e-18	0.17e-18
260	5.50e-19	0.70e-19
270	2.60e-19	2.70e-19