Seasonal Kendall Test for Trend
       US Geological Survey, 2005

 Data set:  Example SK1b - Seasonal Kendall test, input type 1          

 The record is 14 complete water years with  12 seasons per year
    beginning in water year 1972.

 The tau correlation coefficient is -0.060
     S =    -41.
     z =  -0.872
     p =  0.3834
     p =  0.4323 adjusted for correlation among seasons
                 (such as serial dependence)
 The adjusted p-value should be used only for data with
    more than 10 annual values per season.

 The estimated trend may be described by the equation:

    Y =  0.5049     +  -0.4608E-01 * Time

    where Time = Year (as a decimal) - 1971.75 (beginning of first water year)