T_ss = ( .....
                               .....
                               .....
                               ..... )
 
   SCLK_PARTITION_END_ss   = ( .....
                               .....
                               .....
                               ..... )
</PRE>
   where --ss is the spacecraft ID code. These variables are arrays
   containing one element per partition. The nth element of
<P>
 
<PRE>
   SCLK_PARTITITION_END_ss
</PRE>
   is considered to be the ``first tick'' of the (n