sentences:  Using this algorithm, if the month in question is notated month 0, a weighted average is formed of months -6 to 6, where months -5 to 5 are given weightings of 1, and months -6 and 6 are given weightings of 0.5.Other smoothing formulas exist, and they usually give slightly different values for the amplitude and timings of the solar cycles.An example is the Meeus smoothing formula, with related solar cycles characteristics available in this STCE news item.