What do the column headings in the station table mean?
The station table has six columns — Station ID, Station Name, Latitude, Longitude, Elevation and Ondate. The Station ID is a unique identifier to each respective station. The Station Name either describes the location of the station, or is a particular location. Latitude is in degrees (°) north, so a negative number means that the station is south of the equator. Longitude is in degrees (°) east, so a negative number means that the station is west of the Greenwich meridian in London, England (the location of zero degrees longitude). Elevation is the height above sea level in meters. The Ondate is a number that is a combination of the year (four values) and the Julian Day (three values) and refers to the last time something was modified at that station (ie. a new sensor was installed, a different sample rate was implemented, etc.). Thus, an ondate of 2004100 does not mean that the station first started operating in 2004, only that a change in its setup occurred then: it could have been
