DEVIATING status indicates operation is deviating from a baseline.
This status is currently not mapped directly to any particular signal. Instead, it is determined based on the sequencing of signals within some window. It indicates that the service is changing but the target state is yet to be fully determined. It is not yet a warning but something that should be noted. Having this transitional state appear is useful in assessing whether underlying signaling scoring policies can be effective in prediction.
OpenSignals service providers are expected to innovate in the choice of algorithm(s) employed in the early detection of deviation.
This can be considered a cautionary level.