Hourly meterological data for LGA, JFK and EWR.
weatherA data frame with columns
Weather station. Named origin to facilitate merging with
flights data.
Time of recording.
Temperature and dewpoint in F.
Relative humidity.
Wind direction (in degrees), speed and gust speed (in mph).
Precipitation, in inches.
Sea level pressure in millibars.
Visibility in miles.
Date and hour of the recording as a POSIXct date.