Graphs
The Current Settings chart shows the adjustment, in seconds, made between successive settings since starting the program. The Previous Settings chart (Pro version) shows the settings made in previous runs of the program.
The Clock Drift chart shows the amount of drift as measured in seconds per day between two settings where a time adjustment was made. Drift is an indication of how accurate the system clock is over time
The charts can be re-arranged by pressing the Arrange button or by choosing a display option under the Windows menu.

Current Settings Graph
The setting difference chart shows the time adjustment, in seconds, made at each setting.  The vertical axis shows time difference, which is the amount of time the internal clock was off in seconds from standard time. The horizontal axis shows the readings - the time the settings were made spread across the bottom of the graph.

Previous Settings Graph
The Previous Settings graph provides a quick way to view the local computer's clock accuracy over time.  The chart shows the time adjustment, in seconds, made at each setting recorded in the log file.  As with the Current Settings graph the vertical axis shows the time difference which is the amount of time, in seconds the internal clock was off from standard time. The horizontal axis shows the time settings - the date or time of the actual setting is shown across the bottom of the graph.

The log file must have data for the graph to use.  The ignore zero settings option suppresses settings where the time was in sync and displays settings (in 3D) where a time change was made on the local computer.  Data is displayed from the last setting made on the previous run of ClockWatch on backwards in time. Increasing the number of data points shows earlier data if available.

Clock Drift Graph
The Clock Drift chart shows the amount of drift between two successive settings where the internal system clock was changed. Drift is an indication of how accurate the system clock is over time.
The vertical axis shows the clock drift  (in seconds per day) which is calculated using successive settings where the internal clock was adjusted. Settings where there is no time change are ignored for the drift calculation.  For these "0" settings the drift is shown as "0".  The horizontal axis shows the time settings - the date or time of the actual setting is shown across the bottom of the graph.

Notes on the Graphs
The horizontal axis for charts is the date and time the settings were attempted..
Settings where the system clock was within 1 second of standard will show as setting with no time difference and no clock drift.
The number of data points will show the most recent data only when the number of settings in the current session exceeds the number of data points.
Graphs will only display after there is at least one new setting to display.
When restarting the program, the first value on the chart will be the last setting where a time change was made.
The previous settings graph shows data in 3D when the Ignore Zero option is used, in 2D when zero data is included.
The vertical scales (y-axis) scale automatically depending on the maximum value to display.
Selecting a graph with the mouse will open the Graph Options tab. Upon redraw, the selected graph will then be in the leftmost position of the graph area of the main screen.