OLI/GNDRAD/M1 - Instrument not properly grounded

At the start of data collection all OLI GNDRAD measurements were corrupted by a grounding 
problem.  Additional grounding methods were put into place on 10/18/2013 eliminating the 
problem.  All GNDRAD data are suspect during the specified time range.

• lon(lon)
• Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_hemisp_dome_resist)
• Instantaneous Upwelling Pyrgeometer Thermopile Pyrgeometer(inst_up_long_hemisp_tp)
• Instantaneous Surface Infra-Red Signal(inst_sfc_ir_signal)
• Time offset from base_time(time_offset)
• -180.0 - +180.0(alt)
• Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_hemisp_case_resist)
• base time in epoch(base_time)
• time_in_seconds_since_volume_start(time)
• Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)
• North Latitude(lat)

• Upwelling shortwave hemispheric irradiance, pyranometer, minima(up_short_hemisp_min)
• Surface Infra-Red Temperature, Minima(sfc_ir_temp_min)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
  Standard Deviation(up_long_hemisp_std)
• Upwelling longwave hemispheric irradiance, pyrgeometer, maxima(up_long_hemisp_max)
• -180.0 - +180.0(alt)
• 10 meter Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• North Latitude(lat)
• Upwelling Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
• Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature(inst_up_long_hemisp_dome_temp)
• Battery voltage(vBatt)
• Surface infra-red temperature(sfc_ir_temp)
• base time in epoch(base_time)
• Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature(inst_up_long_hemisp_case_temp)
• lon(lon)
• Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
• time_in_seconds_since_volume_start(time)
• Instantaneous Upwelling Pyrgeometer Thermopile Pyrgeometer(inst_up_long_hemisp_tp)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
  Standard Deviation(up_short_hemisp_std)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
• Time offset from base_time(time_offset)
• Data Logger Temperature(logger_temp)
• 25 meter Upwelling Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Surface Infra-Red Temperature, Maxima(sfc_ir_temp_max)