Timebeat Offset readings provide up to date, real-time measurements for how accurate your clocks are to your Source input (primarily this is UTC).
We recommend that you focus on looking at the EMA values as this provides the simplest human readable long term averages of your sync status. As such this tends to be an easier to understand value of your clock behaviour as opposed to the Raw readout.
EMA and Raw Offset:
Timebeat reports its offset data using 2 primary field definitions Raw and EMA. EMA is traditionally the value which is used for quick reference to the offset as this is easily digestible and provides a simple, stable reading for use in reports and visualisations.
The Raw values are also plotted on the graphs and will appear around the EMA line as dots.
EMA: is the exponentially weighted moving average of the offset of the clock from the source UTC
Raw: is the offset of the clock from the source of UTC in its unedited form
The Raw field is useful for understanding the spread of your UTC source to clock error, it is the goal of Timebeat to reduce this spread as much as possible. Although this is the Raw offset from the received time and the clock that is being synchronised it is not an accurate representation of your clock behaviour and as such this is why we recommend the EMA value to understand your clock behaviour as opposed to just the offset records.
For more detailed explanations into the minutia of what Raw represents and why EMA is a more useful day to day value you can get in touch.