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The X11 Procedure

SSPAN Statement

SSPAN options ;
The SSPAN statement applies sliding spans analysis to determine the suitability of seasonal adjustment for an economic series.

The following options can appear in the SSPAN Statement:

NDEC= n
specifies the number of decimal places shown on selected Sliding Span reports. This option has no effect on the precision of the variables values in the OUTSPAN output data set.

CUTOFF= value
gives the percentage value for determining an excessive difference within a span for the seasonal factors, the seasonally adjusted series, and month-to-month and year-to-years differences in the seasonally adjusted series. The default value is 3.0. The use of the CUTOFF=value in determining the maximum percent difference (MPD) is described in "Computational Details" later in this section. Caution should be used in changing the default CUTOFF=value. The empirical threshold ranges found by the Census Bureau no longer apply when value is changed.

TDCUTOFF= value
gives the percentage value for determining an excessive difference within a span for the trading day factors. The default value is 2.0. The use of the TDCUTOFF=value in determining the maximum percent difference (MPD) is described in "Computational Details" later in this section. Caution should be used in changing the default TDCUTOFF=value. The empirical threshold ranges found by the Census Bureau no longer apply when value is changed.

NOPRINT
suppresses all sliding spans reports.

PRINT
prints the summary sliding spans reports S 0 - S 6.E.

PRINTALL
prints the summary sliding spans reports S 0 - S 6.E, along with detail reports S 7.A - S 7.E.

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