baytrends (version 1.2.1)

QWstacked: Stream Water Quality

Description

Selected water-quality data for Judicial Ditch 64 near Mentor, Minnesota (SW4), USGS station number 05078470 for calendar year 2003.

From smwrData.

Usage

QWstacked

Format

Data frame with 46 rows and 22 columns

Name	Type	Description
	agency_cd	character
Agency code	site_no	character
USGS station number	sample_dt	Date
Sample date	sample_tm	character
Sample time	sample_end_dt	Date
Sample end date	sample_end_tm	character
Sample end time	sample_start_time_datum_cd	character
Time zone datum	tm_datum_rlbty_cd	character
Time datum reliability code	coll_ent_cd	character
Collecting agency code	medium_cd	character
Sample medium code	tu_id	character
Taxonomic unit code	body_part_id	character
Body part code	parm_cd	character
Analyte parameter code	remark_cd	character
Remark code for the result	result_va	character
Numeric value of the result	val_qual_tx	character
Result value qualifier code	meth_cd	character
Lab method code	dqi_cd	character
Data-quality indicator code	rpt_lev_va	character
Reporting level	rpt_lev_cd	character
Reporting level type	lab_std_va	character
Lab standard deviation	anl_ent_cd	character
Analyzing agency code	Name	Type

Note: all concentrations in the column result_va are in milligrams per liter as phosphorus.

Examples

# NOT RUN {
data(QWstacked)
# Plot the data for whole-water phosphorus
with(subset(QWstacked, parm_cd == "00665"), plot(sample_dt, result_va))
# Overlay the data for dissolved phosphorus (should be smaller values)
with(subset(QWstacked, parm_cd == "00666"), points(sample_dt, result_va, col='red'))
# }