Number fractions and mass fractions for the Z elements through Ni are given for L2003 below.  Heavier elements are included in the computation of the fractions, but are a very small part of the 6th decimal place.  Li, Be, B are not included due to their small abundances too.

Lodders 2003
Element # frac mass frac
c 0.243992 0.166224
n 0.067201 0.053406
o 0.486828 0.441845
f 0.000029 0.000031
ne 0.073684 0.084347
na 0.001983 0.002586
mg 0.035268 0.048633
al 0.002867 0.004387
si 0.034465 0.054916
p 0.000287 0.000504
s 0.015395 0.028006
cl 0.000181 0.000364
ar 0.003527 0.007992
k 0.000128 0.000284
ca 0.002175 0.004944
sc 0.000001 0.000003
ti 0.000083 0.000225
v 0.000010 0.000029
cr 0.000444 0.001310
mn 0.000314 0.000980
fe 0.029334 0.092934
co 0.000081 0.000270
ni 0.001650 0.005494