wavel.	cross sect.	uncertainty
-----------------------------------
200	1.49e-20	7.29e-22
206	1.34e-20	5.10e-22
212	1.15e-20	2.55e-22
218	1.01e-20	2.50e-22
224	7.81e-21	2.88e-22
230	5.84e-21	1.79e-22