_4) concentration (mg/L) in precipitation measured at
Olympic National Park, Hoh Ranger Station (WA14), weekly or every other week
from January 6, 2009 through December 20, 2011.
A data frame with 102 observations on the following 6 variables.
Start of collection period. Date on which the sample bucket was installed on the collector.
End of collection period. Date on which the sample bucket was removed from the collector.
a numeric vector indicating the cumulative week number starting from January 1, 2009.
a character vector of the original NH
concentrations reported either as the observed value or less than some
detection limit. For values reported as less than a detection limit,
the value reported is the actual limit of detection or, in the case of a
diluted sample, the product of the detection limit value and the
a numeric vector of NH
_4 concentrations with
non-detects coded to their detection limit.
a logical vector indicating which observations are censored.
StationOlympic National Park-Hoh Ranger Station (WA14)
LocationJefferson County, Washington
USGS 1:24000 Map NameOwl Mountain
Operating AgencyOlympic National Park
Sponsoring AgencyNPS-Air Resources Division
National Atmospheric Deposition Program, National Trends Network (NADP/NTN).