QWall | R Documentation |
Whole-water or total phosphorus data for selected USGS streamgages for calendar year 2003.
QWall
Data frame with 23 rows and 4 columns
Name | Type | Description |
STAID | character | USGS station number |
DATES | Date | Sample date |
TIMES | character | Sample time |
R00665 | character | Remark code for total phosphorus concentration |
P00665 | numeric | Total phosphorus concentration |
Note: all
concentrations are in milligrams per liter as phosphorus.
Data retrieved from NWISWeb (http://nwis.waterdata.usgs.gov/mn/nwis/qw) on 2005-01-05.
data(QWall) # Plot the data for station 05078770 with(subset(QWall, STAID == "05078770"), plot(DATES, P00665, log='y', ylim=c(0.001, 0.2))) # Overlay the data for station 05078470, smaller values and missing the sample in late April. with(subset(QWall, STAID == "05078470"), points(DATES, P00665, col='red'))
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