Data Format:  Datalogger Campbell-SurfaceMet (ovl)
Valid Period: 2012-02-04 00:00:00 - Current

Field  1:  Datalogger ID
Field  2:  Year (end time of average)
Field  3:  Julian Day (end time of average)
Field  4:  HoursMinutes (end time of average)
Field  5:  Pressure (mb)
Field  6:  Temperature (C)
Field  7:  Relative Humidity (%)
Field  8:  Battery Voltage (volts)
Field  9:  Precipitation (mm)