Seasonal Kendall Test for Trend
US Geological Survey, 2005
Data set: Example SK1c - Seasonal Kendall test, input type 1
The record is 7 complete water years with 12 seasons per year
beginning in water year 1975.
The tau correlation coefficient is -0.063
S = -12.
z = -0.584
p = 0.5592
p = 0.2838 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 = 0.6000E-01 + 0.000 * Time
where Time = Year (as a decimal) - 1974.75 (beginning of first water year)