RK3b: Annual Series Data

In USGS-R/restrend: EStimate TRENDs

Annual Series Data

Description

Ammonium (micro eq/L) in snowpack, Colorado and New Mexico.

Usage

RK3b

Format

Data frame with 299 rows and 3 columns

Name	Type	Description
year	integer	The year in which the sample was taken
site	integer	The site number
value	numeric	The ammonium concentration of the sample in micro eq/L

Source

Data retrieved from the supplemental data set for Helsel and others (2006).

References

Helsel, D.R., Mueller, D.K., and Slack, J.R., 2006, Computer program for the Kendall family of trend tests: U.S. Geological Survey Scientific Investigations Report 2005-5275, 4 p.

Examples

## Not run: 
data(RK3b)
# How many samples at each site?
with(RK3b, table(site))

## End(Not run)

USGS-R/restrend documentation built on Oct. 11, 2022, 6:10 a.m.