This plot visualizes the fraction of red-scored calibration ABs per instrument. The
instruments are grouped by assignment (as per 2013-09). The fractions are
defined as the ratio of red-score ABs over grand total of all scored ABs.</font><p><font size="2">

The purpose of this plot is to monitor the significance of the scoring system
for a given instrument. Usually a system with red-score fraction below 15% is
considered a mature and significant system. This value is indicated by the
broken line. There could be exceptions but these then need to be clearly
understood.</font><p><font size="2">

<b>Note:</b> The latest data point in the current plot usually refers to a month which is not yet finished.
Its value will therefore continue to increase until a new last month starts.