The `atmos`

data set resides in the `nasaweather`

package of the *R* programming language. It contains a collection of atmospheric variables measured between 1995 and 2000 on a grid of 576 coordinates in the western hemisphere. The data set comes from the 2006 ASA Data Expo.

Some of the variables in the `atmos`

data set are:

**temp**- The mean monthly air temperature near the surface of the Earth (measured in kelvins (*K*))**pressure**- The mean monthly air pressure at the surface of the Earth (measured in millibars (*mb*))**ozone**- The mean monthly abundance of atmospheric ozone (measured in Dobson units (*DU*))

You can convert the temperature unit from Kelvin to Celsius with the formula

\[ celsius = kelvin - 273.15 \]

And you can convert the result to Fahrenheit with the formula

\[ fahrenheit = celsius \times \frac{9}{5} + 32 \]

For example, 282.15 degrees Kelvin corresponds to 9 degrees Celsius.