Weather Data
Allows to get weather data from Automated Surface Observing System (ASOS) stations (airports) in the whole world thanks to the Iowa Environment Mesonet website.
You can find Station ID from this site.
Choose a network of the area where you want to get data and click "Switch to Network".
Choose the characters of the station like "SFO" from the list.
Then type it to Station ID.
You can limit the range of time with explicit dates like '2015-11-03' with these parameters.
Once you concirmed the result, click Import button to import the data as a data frame in Exploratory. 
station - three or four character site identifier
valid - timestamp of the observation (UTC)
tmpf - Air Temperature in Fahrenheit, typically @ 2 meters
dwpf - Dew Point Temperature in Fahrenheit, typically @ 2 meters
relh - Relative Humidity in
drct - Wind Direction in degrees from north
sknt - Wind Speed in knots
p01i - One hour precipitation for the period from the observation time to the time of the previous
hourly precipitation reset. This varies slightly by site. Values are in inches. This value
may or may not contain frozen precipitation melted by some device on the sensor or estimated
by some other means. Unfortunately, we do not know of an authoritative database denoting
which station has which sensor.
alti - Pressure altimeter in inches
mslp - Sea Level Pressure in millibar
vsby - Visibility in miles
gust - Wind Gust in knots
riem_networks 3
skyc1 - Sky Level 1 Coverage
skyc2 - Sky Level 2 Coverage
skyc3 - Sky Level 3 Coverage
skyc4 - Sky Level 4 Coverage
skyl1 - Sky Level 1 Altitude in feet
skyl2 - Sky Level 2 Altitude in feet
skyl3 - Sky Level 3 Altitude in feet
skyl4 - Sky Level 4 Altitude in feet
presentwx: Present Weather Codes (space seperated), see e.g. [this manual](http://www.ofcm.gov/fmh-
1/pdf/H-CH8.pdf) for further explanations.
metar - unprocessed reported observation in METAR format
