3. The system of claim 1 , wherein the system is further configured to: separate between variable behavior of the at least one trend and periodic behavior of the at least one trend respective of the prediction grade.
3. The system of claim 1 , wherein the system is further configured to: separate between variable behavior of the at least one trend and periodic behavior of the at least one trend respective of the prediction grade. 4. The system of claim 3 , wherein the system is further configured to: define regions of interest related to the at least one trend respective of the periodic behavior of the at least one trend.