ap.mx: Air pollution Data, Mexico City.
| ap.mx | R Documentation |
Air pollution Data, Mexico City.
Description
Daily air pollution levels in Mexico City, January 2004 – June 2005.
Usage
data(ap.mx)Format
This data frame stores time series vectors with the following information:
- time
-
Time vector.
- PM10
-
24–hr average concentration of
PM_{10}, in micrograms per milliliter. - O3
-
Daily maximum 8–hour moving average of ozone, in micrograms per milliliter.
- temp
-
Daily mean average of temperature, in celsius degrees.
- HR
-
Daily mean average (%) of relative humidity.
Details
These are readings of PM_{10},
O_{3}, temperature and humidity between
1 January 2004 and 30 June 2005 in
Mexico City Metropolitan Area.
Each observation is the 24–hr mean average (between
00:00 and 23:59 hrs), except for
ozone, where the
maximum over all the sliding 8–hour–windows,
between 00:00 and 23:59 hrs is reported, viz.
the daily maximum 8–hour moving average.
Source
National Institute of Ecology. Gathers and disseminates the data generated by the central air quality monitoring network in Mexico City. Website: https://www.gob.mx/inecc/
Examples
data(ap.mx)
summary(ap.mx[, -1])
class(ap.mx[, "PM10"])
layout(matrix(c(1, 1, 2,3), 2, 2, byrow = TRUE))
plot.ts(ts(ap.mx$PM10), ylab = expression(PM[10]~"Series"),
col = "brown", xaxt = "n", las = 1)
xtick <- c(1, 92, 183, 275, 367, 457, 518)
xtext <- c("Jan/04", "April/04", "July/04", "Oct/04", "Jan/05",
"April/05", "June/05")
axis(side = 1, at = xtick, labels = FALSE)
text(x = xtick, par("usr")[3], labels = xtext,
pos = 1, xpd = TRUE, col = "black")
pacf(ap.mx$PM10, main = "", ylim= c(-0.5, 1), lag.max = 60, las = 1)
acf(ap.mx$PM10, main = "", ylim= c(-0.5, 1), lag.max = 60, las = 1)
