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Forecast Models 
When analyzing a time series various patterns can be recognized. The following different forecast models are derived from these patterns:
· Constant – There is a constant time series gradient when the time series varies statistically around a mean value:

· Trend – With a time series gradient of type trend the time series value falls or rises constantly over a long period of time with only occasional deviations:

· Season – With a seasonal time series gradient, recurring variances from a base value occur at periodic intervals:

· Trend-seasonal – With a trend-seasonal time series gradient, seasonal variances occur from a continually increasing mean:

· Copying actual data (no forecast is executed) – copies the historic data updated from the operational application. You can then edit this as required.
· Irregular – No pattern can be detected in a series of consumption values.