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 96/07/11 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.

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