This data was graphically deduced from Fig. 25-3a of T. Sarna, HM Swartz, The physical properties of melanins, in "The Pigmentary System", ed. JJ Nordlund et al., Oxford University Press, 1988, which was a line drawing. They cite as the source of the data:

• T Sarna, RC Sealy, Photoinduced oxygen consumption in melanin systems. Action spectra and quantum Yields for eumelanin and synthetic melanin. Photochem. Photobiol. 39:69-74, 1984.
• RP Crippa, V Cristofoletti, N Romeo, A band model for melanin deduced from optical absorption and photoconductivity experiments. Biochim. Biophys. Acta 538:164-170, 1978.

wavelength [nm]
ext #1 = extinction coefficient [cm^-1 (mg/ml)^-1]
ext #2 = extinction coefficient [cm^-1 (moles/liter)^-1]

nm    	ext #1	ext #2
209.99	41.900	7458.2
212.21	40.667	7238.7
218.91	39.082	6956.6
223.36	37.145	6611.8
230.06	35.383	6298.2
239.00	33.445	5953.2
245.70	31.507	5608.2
261.38	29.392	5231.8
279.30	27.277	4855.3
294.99	25.338	4510.2
312.92	23.575	4196.4
324.13	22.517	4008.0
342.06	20.578	3662.9
357.75	18.639	3317.7
382.42	16.523	2941.1
407.07	13.878	2470.3
431.74	11.938	2125.0
458.67	10.173	1810.8
483.36	8.9370	1590.8
523.76	6.9950	1245.1
550.70	5.7580	1024.9
588.87	4.5200	804.56
615.82	3.9880	709.86
642.77	3.2800	583.84
680.96	2.7460	488.79
712.41	2.2140	394.09
734.88	2.0340	362.05
764.09	1.8540	330.01
782.06	1.6750	298.15
804.53	1.4960	266.29
820.26	1.4940	265.93