The file S12_79.xlsx contains data on mass layoff events in all industries in the U.S. There are two versions of the data: non-seasonally adjusted and seasonally adjusted. Presumably, seasonal factors can be found by dividing the non-seasonally adjusted values by the seasonally adjusted values. For example, the seasonal factor for April 1995 is 1431/1492 = 0.959. How well can you replicate these seasonal factors with appropriate StatTools analyses?