Get Macurves Filters
macurves(seas_filter = c("S3X3", "S3X1", "S3X5", "S3X9", "S3X15"), period = 12)
macurves("S3X3")
#> q=2 q=1 q=0
#> t-2 0.1111111 0.1111111 0.1851852
#> t-1 0.2222222 0.2592593 0.4074074
#> t 0.3333333 0.3703704 0.4074074
#> t+1 0.2222222 0.2592593 0.0000000
#> t+2 0.1111111 0.0000000 0.0000000