Kendall's tau Correlation Test
       US Geological Survey, 2005

 Data set:  Example MK4b - Mann-Kendall test, input type 4              

 The tau correlation coefficient is -0.133
     S =    -28.
     z =  -0.815
     p =  0.4149

 The relation may be described by the equation:

    Y =  11799.     +   -5.772     * X