Cont. wavel. cross sect. 248.0 3.13e-18 250.0 3.52e-18 252.0 3.93e-18 253.7 4.28e-18 255.0 4.52e-18 257.7 4.85e-18 260.0 5.12e-18 v'-0 wavel. cross sect. 12-0 275.0 6.34e-18 10-0 277.2 6.80e-18 10-0 279.6 6.88e-18 9-0 282.2 6.67e-18 8-0 285.2 6.27e-18 7-0 288.4 5.16e-18 6-0 292.0 3.82e-18 5-0 295.4 3.15e-18 4-0 299.3 2.07e-18 3-0 303.4 1.04e-18 2-0 307.8 4.70e-19