Parameters of the source:
a) identification
b) coordinates ( 
, 
), accurate to 1''
c) epoch and reference for these coordinates
d) heliocentric radial velocity in km s 
.
The convention 
is followed
e) number of wavelength ranges (between 1 and 64)
Parameters for each of the up to 64 spectral lines:
f) central wavelength of line in 
m
( 
m)
g) expected source flux density in Jy of line plus continuum at
line wavelength
h) required signal-to-noise ratio SNR