There are 7 isotopes, 138, 137, 136, 135, 134, 132, 130.  Isotopes 
137 and 135 have hyperfine splittings listed in ab5600135.dat and
ab5600137.dat.  A few lines with measured isotopic splittings are listed
in isoshifts5600.dat.   Hyper5600135.all has the lines with measured
isotopic splitting for 135.  Hyper5600135only.all has all the other lines.
Likewise for 137.  All the lines for all the isotopes are combined into
hyper5600iso.all.   Lines with no hyperfine or isotopic splitting appear
only at the centroid wavelength.  Lines with measured hyperfine splitting
but no measured isotopic splitting have 135 and 137 components and an 864
(138,136,134,132,130) component at the centroid wavelength with log
isotopic abundance -0.085.