| qwMoRivOmaha {seawaveQ} | R Documentation |
Water-quality data for 06610000 Missouri River at Omaha, Nebr.
Description
Scatterplots of water-quality data for 06610000 Missouri River at Omaha, Nebr.
Usage
qwMoRivOmahaFormat
A data frame containing 115 water-quality samples for eight chemical constituents. There are 20 variables.
| staid | character | USGS Station identification number |
| dates | date | Date water-quality sample collected |
| times | numeric | Time sample was collected |
| R04035 | character | Remark code (blank, _, <, or E) |
| P04035 | numeric | Simazine, water, filtered, recoverable, micrograms per liter |
| R04037 | character | Remark code (blank, _, <, or E) |
| P04037 | numeric | Prometon, water, filtered, recoverable, micrograms per liter |
| R04041 | character | Remark code (blank, _, <, or E) |
| P04041 | numeric | Cyanazine, water, filtered, recoverable, micrograms per liter |
| R39415 | character | Remark code (blank, _, <, or E) |
| P39415 | numeric | Metolachlor, water, filtered, recoverable, micrograms per liter |
| R46342 | character | Remark code (blank, _, <, or E) |
| P46342 | numeric | Alachlor, water, filtered, recoverable, micrograms per liter |
| R82630 | character | Remark code (blank, _, <, or E) |
| P82630 | numeric | Metribuzin, water, filtered, recoverable, micrograms per liter |
| R82661 | character | Remark code (blank, _, <, or E) |
| P82661 | numeric | Trifluralin, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter |
| R82668 | character | Remark code (blank, _, <, or E) |
| P82668 | numeric | EPTC, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter |
Details
Chemical concentration data are in the columns that start with a P and are followed by a number. Qualification codes for the concentration data are in the columns that start with an R followed by the same numbers as the associated concentration data. For example, column P04035 indicates simazine data, 04035, being the U.S. Geological Survey parameter code for simazine. The qualification codes for the simazine concentrations are found in the column R04035, indicating a U.S. Geological Survey remark code. Remark codes include _ or nothing, indicating no qualification of the value in the associated concentration field; <, indicating a censored value that is less than the number reported in the associated concentration field; and E, indicating that the value has been estimated. See Oblinger Childress and others (1999) for information on the remark codes used by the U.S. Geological Survey.
Source
Data provided by Patrick Phillips, U.S. Geological Survey, New York Water Science Center.
References
Oblinger Childress, C.J., Foreman, W.T., Connor, B.F., and Maloney, T.J., 1999, New reporting procedures based on long-term method detection levels and some considerations for interpretations of water-quality data provided by the U.S. Geological Survey Open-File Report 99–193, 19 p. [Also available at http://water.usgs.gov/owq/OFR_99-193/index.html.]
Examples
data(swData)
# summary of water-quality concentrations
apply(qwMoRivOmaha[, grep("P[[:digit:]]", dimnames(qwMoRivOmaha)[[2]])],
2, summary)
# scatter plot of Simazine concentrations
cenScatPlot(qwMoRivOmaha, pname = "04035")
# scatter plot with many additional plotting arguments
par(las = 1, tcl = 0.5)
cenScatPlot(qwMoRivOmaha, pname = "04035",
site = "06610000 Missouri River at Omaha, Nebr.",
ylabel = "Simazine concentration, in micrograms per liter",
legcex = 0.7, qwcols = c("R", "P"),
ylim = c(0, 0.1), yaxs = "i",
xlim = c(as.Date("1996-01-01"), as.Date("2004-01-01")),
xaxs = "i", xaxt = "n")
axdates <- c("1996-01-01", "1998-01-01", "2000-01-01", "2002-01-01",
"2004-01-01")
axis(1, as.Date(axdates), labels = c("1996", "1998", "2000", "2002", "2004"))
# Prometon scatter plot
cenScatPlot(qwMoRivOmaha, pname = "04037",
site = "06610000 Missouri River at Omaha, Nebr.",
ylabel = "Prometon concentration, in micrograms per liter",
legcex = 0.7, qwcols = c("R", "P"),
ylim = c(0, 0.1), yaxs = "i",
xlim = c(as.Date("1996-01-01"),
as.Date("2004-01-01")), xaxs = "i", xaxt = "n")
axdates <- c("1996-01-01", "1998-01-01", "2000-01-01", "2002-01-01",
"2004-01-01")
axis(1, as.Date(axdates), labels = c("1996", "1998", "2000", "2002", "2004"))
# Cyanazine scatter plot
cenScatPlot(qwMoRivOmaha, pname = "04041",
site = "06610000 Missouri River at Omaha, Nebr.",
ylabel = "Cyanazine concentration, in micrograms per liter",
legcex = 0.7, qwcols = c("R", "P"),
ylim = c(0.001, 5), yaxs = "i",
xlim = c(as.Date("1996-01-01"), as.Date("2004-01-01")),
xaxs = "i", xaxt = "n", log = "y")
axdates <- c("1996-01-01", "1998-01-01", "2000-01-01", "2002-01-01",
"2004-01-01")
axis(1, as.Date(axdates), labels = c("1996", "1998", "2000", "2002", "2004"))
# Metolachlor scatter plot
cenScatPlot(qwMoRivOmaha, pname = "39415",
site = "06610000 Missouri River at Omaha, Nebr.",
ylabel = "Metolachlor concentration, in micrograms per liter",
legcex = 0.7, qwcols = c("R", "P"),
ylim = c(0.001,5), yaxs = "i",
xlim = c(as.Date("1996-01-01"), as.Date("2004-01-01")),
xaxs = "i", xaxt = "n", log = "y", legpos = "bottomleft")
axdates <- c("1996-01-01", "1998-01-01", "2000-01-01", "2002-01-01",
"2004-01-01")
axis(1, as.Date(axdates), labels = c("1996", "1998", "2000", "2002", "2004"))
# Alachlor scatter plot
cenScatPlot(qwMoRivOmaha, pname = "46342",
site = "06610000 Missouri River at Omaha, Nebr.",
ylabel = "Alachlor concentration, in micrograms per liter",
legcex = 0.7, qwcols = c("R", "P"),
ylim = c(0, 0.1), yaxs = "i",
xlim = c(as.Date("1996-01-01"), as.Date("2004-01-01")),
xaxs = "i", xaxt = "n")
axdates <- c("1996-01-01", "1998-01-01", "2000-01-01", "2002-01-01",
"2004-01-01")
axis(1, as.Date(axdates), labels = c("1996", "1998", "2000", "2002", "2004"))
# Metribuzin scatter plot
cenScatPlot(qwMoRivOmaha, pname = "82630",
site = "06610000 Missouri River at Omaha, Nebr.",
ylabel = "Metribuzin concentration, in micrograms per liter",
legcex = 0.7, qwcols = c("R", "P"),
ylim = c(0, 0.1), yaxs = "i",
xlim = c(as.Date("1996-01-01"), as.Date("2004-01-01")),
xaxs = "i", xaxt = "n")
axdates <- c("1996-01-01", "1998-01-01", "2000-01-01", "2002-01-01",
"2004-01-01")
axis(1, as.Date(axdates), labels = c("1996", "1998", "2000", "2002", "2004"))
# Trifluralin scatter plot
cenScatPlot(qwMoRivOmaha, pname = "82661",
site = "06610000 Missouri River at Omaha, Nebr.",
ylabel = "Trifluralin concentration, in micrograms per liter",
legcex = 0.7, qwcols = c("R", "P"),
ylim = c(0, 0.03), yaxs = "i",
xlim = c(as.Date("1996-01-01"), as.Date("2004-01-01")),
xaxs = "i", xaxt = "n")
axdates<-c("1996-01-01", "1998-01-01", "2000-01-01", "2002-01-01",
"2004-01-01")
axis(1, as.Date(axdates), labels = c("1996", "1998", "2000", "2002", "2004"))
# EPTC scatter plot
cenScatPlot(qwMoRivOmaha, pname = "82668",
site = "06610000 Missouri River at Omaha, Nebr.",
ylabel = "EPTC concentration, in micrograms per liter",
legcex = 0.7, qwcols = c("R", "P"),
ylim = c(0.001, 1), yaxs = "i",
xlim = c(as.Date("1996-01-01"), as.Date("2004-01-01")),
xaxs = "i", xaxt = "n", log = "y")
axdates <- c("1996-01-01", "1998-01-01", "2000-01-01", "2002-01-01",
"2004-01-01")
axis(1, as.Date(axdates), labels =c ("1996", "1998", "2000", "2002", "2004"))