time stamp error

The internal code that runs the MFRSR data logger
had a bug that occasionally caused the time stamp associated with the data to
be slightly in error.  This error is thought to be very small (say less than
30 seconds) and very infrequent.  (Unfortunately, we cannot give firm
estimates of the magnitude and frequency of the error). 

After 96/07/09 the problem was corrected.  Those who use the data before this
time should realize that the time stamp for each record of data might be
slightly in error.

• Downwelling Longwave Diffuse Hemispheric Irradiance, Ventilated Pyrgeometer(down_long_diffuse_hemisp)
• Time offset from base_time(time_offset)
• Ventilated Pyrgeometer Case Temperature(down_long_case_temp)
• Data Logger Temperature(logger_temp)
• Ventilated Pyrgeometer Dome Temperature(down_long_dome_temp)
• 25 meter Upwelling Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• North Latitude(lat)
• Flag fields with *2 returned from callang(flag_ln_error1-24)
• -180.0 - +180.0(alt)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Flag fields with *1 returned from callang(flag_zero_divisor1-24)
• 10 meter Longwave Dome Temperature, Pyrgeometer(up_long_dome_temp)
• base time in epoch(base_time)
• 10 meter Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Direct Normal Irradiance, MFRSR(direct_norm_broadband)
• 25 meter Longwave Case Temperature, Pyrgeometer(up_long_case_temp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Data logger supply voltage(logger_volt)
• Flag fields with *3 returned from callang(flag_zero_cosine1-24)
• MFRSR channels(channel)
• MFRSR Detector Temperature(mfrsr_temp)
• Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)
• Flag fields with *4 returned from callang(flag_nighttime1-24)
• Hemispheric broadband irradiance(hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Diffuse Hemispheric Broadband Irradiance, offset corrected(diffuse_hemisp_broadband)
• Thermistor Excitation Voltage, Data Logger(therm_volt)
• lon(lon)