A table is presented for the radiation from a Planckian radiator operating between 2000 and 350°K (100° intervals). Values of J(λ) are given for a wave-length range of 0.38 to 0.76µ, at 0.01µ intervals. This is part of a more extensive table (10° intervals) that has been published.
PARRY MOON, "A Table of Planckian Radiation," J. Opt. Soc. Am. 38, 291-292 (1948)