Under “Years back” you enter the number of years back for which a search for day types is to be made. If “Years back is set to 0” then the model uses the whole period the current year.
Max search hours
Under the adaption settings, the “max search hours” controls how long data is allowed to be missing prior to forecast start the current year. If data is missing for more hours the current year, no data from the current year is used.