elcbuild
takes a set of NTimeSeries time series which must
contain the five columns: RATE; ERROR; BACKV;
BACKE; and FRACEXP, as its input. The output file has the
same extension and columns, but each column contains a two
dimensional array (NtimeSeries:nRates), where nRates is the number
of rates of the RATE extension. This output can then be
plotted by lcplot.