E3 - MFRSR out of alignment

The MFRSR at site E3 appears to be woefully out of alignment.  The alignment
problems started about 96/06/01.  It's not possible to exactly pin down
the date that the alignment problem started because the cloudy weather
that occured around 96/06/01 makes the detection of alignment problems
difficult.  (In fact, it wasn't until 96/06/19 that the problem could
be detected unambigiously).  The alignment problem at this site is so
severe that both the morning and afternoon data streams are affected. 
The alignment problem does not affect the total, downwelling radiation
stream.

align instrument - easier said than done

• 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)