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 96/07/16 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.

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