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 96/08/29 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.

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