SGP/SWS/C1 - Calibration exercises

The instrument was removed from service for calibration.  Data, if it exists, is of 
calibration sources and not of sky radiance.  Do not use this data as it is not representative 
of actual sky.

The data are missing and unrecoverable.

• Time offset from base_time(time_offset)
• lon(lon)
• -180.0 - +180.0(alt)
• Calibrated spectrum(zen_spec_calib)
• Shutter state (1:closed, 0:open)(shutter_closed)
• Top of atmosphere spectrum wavelengths(wavelength)
• time_in_seconds_since_volume_start(time)
• North Latitude(lat)
• base time in epoch(base_time)

• Output of voltage regulator at +12VDC(ps2_12v)
• North Latitude(lat)
• time_in_seconds_since_volume_start(time)
• Indium/Gallium/Arsenic spectrometer temperature(InGaAs_spect_temp)
• Time offset from base_time(time_offset)
• -180.0 - +180.0(alt)
• Output of voltage converter to +12VDC(pc104_pos12v)
• Output of voltage regulator at +5VDC(ps2_5v)
• lon(lon)
• Internal instrument temperature(internal_temp)
• base time in epoch(base_time)
• Silicon spectrometer temperature(SI_spect_temp)
• Output of voltage converter to -12VDC(pc104_neg12v)
• Output of voltage converter to +5VDC(pc104_5v)