In use left maximum method LM (Left Most Maximum) is situation of the largest from the left maximum as a result. In use right maximum method RM (Right Most Maximum) is situation of the largest from the right maximum as a result. If the maximum isn´t „sharp top“, but „plate“ (horizontal ) then is possible to use middle maximum method where the result is midpoint of a line. Somewhat danger would be determine result as average value from the situation of two or more consistent tops. We can also use another method.