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 96/07/17 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 Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Flag fields with *1 returned from callang(flag_zero_divisor1-24)
• Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)
• MFRSR channels(channel)
• 25 meter Upwelling Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Direct Normal Irradiance, MFRSR(direct_norm_broadband)
• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• -180.0 - +180.0(alt)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Flag fields with *4 returned from callang(flag_nighttime1-24)
• 10 meter Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• 25 meter Longwave Case Temperature, Pyrgeometer(up_long_case_temp)
• Ventilated Pyrgeometer Case Temperature(down_long_case_temp)
• Ventilated Pyrgeometer Dome Temperature(down_long_dome_temp)
• base time in epoch(base_time)
• Data logger supply voltage(logger_volt)
• Hemispheric broadband irradiance(hemisp_broadband)
• lon(lon)
• Downwelling Longwave Diffuse Hemispheric Irradiance, Ventilated Pyrgeometer(down_long_diffuse_hemisp)
• Flag fields with *3 returned from callang(flag_zero_cosine1-24)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Thermistor Excitation Voltage, Data Logger(therm_volt)
• Data Logger Temperature(logger_temp)
• North Latitude(lat)
• Time offset from base_time(time_offset)
• 10 meter Longwave Dome Temperature, Pyrgeometer(up_long_dome_temp)
• Flag fields with *2 returned from callang(flag_ln_error1-24)
• Diffuse Hemispheric Broadband Irradiance, offset corrected(diffuse_hemisp_broadband)
• MFRSR Detector Temperature(mfrsr_temp)