This is the trending plot monitoring the stability of the GIRAFFE SIMCAL arclamp and the 5 fibre systems.
 These data are derived from the daily SIMLAMP,TAL health check measurements (5 with the HR grating, H525.8B setting; one with the LR grating, L543.1).</font><p><font size="2">

<b>Plots 1-5.</b> For each of the five fibre systems (in H525.8B setting),
an emission line is selected, its intensity
is integrated and divided by the EXPTIME. The resulting flux, in counts/sec, is trended over
time.
</font><p><font size="2">

<b>Plot 6:</b> The same is done for the Medusa1 L543.1 setting.</font><p><font size="2">
 
If a certain
trend effect is visible in *all* slits, it is likely to be caused by the lamp. If it shows up in one fibre system only, it originates
in that particular fibre system.</p>

Find more information <a href="http://www.eso.org/qc/GIRAFFE/qc/lamp_qc1.html">here</a>. The SIMLAMP data are also used to evaluate the 
<a href="http://www.eso.org/qc/GIRAFFE/reports/HEALTH/trend_report_STABILITY_HC.html">grating stability</a>.