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.

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