The calibration control chart plots fine-resolution (typically 1m) data for the period during a calibration, so the user can track the analyzer’s performance.

This chart is reasonably restricted to one parameter at a time, so either the user is limited to only having one site/parameter in the data set, or the user can be presented with a pick list of the site/parameters selected (the latter is preferable).

The control chart would bring up a single graph of data for the first calibration in the data set. Scrolling buttons would allow the user to scroll to the next calibration and previous calibration.

The time range for the graph will be (starting time – 5 minutes) to (cal ending time + 5 minutes). E.g., a 20 minute cal would have a 30- minute plot.

The chart should show the date of the calibration and an X -axis markers at each 5 minutes interval.

Y-axis limits shall be based on the parameter graph max/min. If the reading is > than the max or < the min, too bad.

A “print” button would allow automatic printing of all calibrations in the selected time period, one control chart page per calibration event (e.g., printing calibrations for a month would typically print 30 pages).

The chart itself should show solid horizontal lines for the expected value of each phase, and a plot of the actual analyzer value.

Default fine resolution data should be the lowest average interval available. If the lowest average available is greater than 1 minute, the plot can be listed as unavailable.