Trending plots for flat-field calibrations. The plot show the
minimum signal-to-noise ratio (SNR) that is achieved per spectroscopic order
and the maximum number of counts per detector. Counts are converted from ADU
into electrons. The plots come separately for fibre A and B.</font><p><font size="2">

The upper limit for the counts has been set slightly below the saturation limit of 65535 ADU,
converted into electrons.