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 96/07/10 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.

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