azimuth <- read.csv(file.choose(), header=TRUE)
qqplot(azimuth$Azimuth)

Error in sort(y) : argument "y" is missing, with no default

qqnorm(azimuth)

Error in xy.coords(x, y, xlabel, ylabel, log) :
'x' and 'y' lengths differ

Azimuth        Altitude
23.33211466    -6.561729793
31.51267873     4.801537153
29.04577711      5.24504954
23.63450905     14.03342708
29.12535459     7.224141678
20.76972007     47.95686329
54.89253987     4.837417689
56.57958227     13.12587996
13.09845182    -7.417776178
26.45155154     31.83546988
29.15718557     25.47767069
28.09084746     14.61603384
28.93436865    -1.641785416
28.77521371     17.30536039
29.58690392    -2.202076058
0.779859221     12.92044019
 27.1359178     12.20305106
23.57084707     11.97925859
28.99803063     3.931326877

azimuth <-
structure(list(Azimuth = c(23.33211466, 31.51267873, 29.04577711,
23.63450905, 29.12535459, 20.76972007, 54.89253987, 56.57958227,
13.09845182, 26.45155154, 29.15718557, 28.09084746, 28.93436865,
28.77521371, 29.58690392, 0.779859221, 27.1359178, 23.57084707,
28.99803063), Altitude = c(-6.561729793, 4.801537153, 5.24504954,
14.03342708, 7.224141678, 47.95686329, 4.837417689, 13.12587996,
-7.417776178, 31.83546988, 25.47767069, 14.61603384, -1.641785416,
17.30536039, -2.202076058, 12.92044019, 12.20305106, 11.97925859,
3.931326877)), .Names = c("Azimuth", "Altitude"), class = "data.frame", row.names = c(NA, -19L))

qqplot(x, y, plot.it = TRUE, xlab = "your x-axis label", ylab="your y-axis label", ...)

qqnorm(azimuth$Azimuth);qqline(azimuth$Azimuth)