TWP/MFRSR/C1 - Reprocess: Metadata error

On 1999/02/27 head 225 was replaced by head 227 but the head ID was not updated in the 
documentation until 1999/08/12.  The head ID was incorrectly reported in the data for this 
period.

• base time(base_time)

• base time(base_time)

TWP/MFRSR - Manus Island - shading problems

From about 1999/06/15 (or much earlier - i can't tell for sure), the Manus Island
MFRSR had shading problem in the morning hours.  These shading problems
can be identified by the fuzziness in the direct normal irradiance.  The
problems were apparently corrected on 1999/08/17.  Time will tell if the
shading problem has been solved.  Only the direct normal irradiance and the
diffuse irradiance are affected.  The total irradiance is OK.

• Time offset of tweaks from base_time(time_offset)
• lat(lat)
• Diffuse Hemispheric Broadband Irradiance (Approximate), MFRSR(diffuse_hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Dummy altitude for Zeb(alt)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• lon(lon)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• base time(base_time)
• Hemispheric Irradiance, MFRSR(hemisp_broadband)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• MFRSR Detector Temperature(mfrsr_temp)
• Data Logger Supply Voltage(logger_volt)

• Raw data stream - documentation not supported(Raw data stream - documentation not supported)

• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Dummy altitude for Zeb(alt)
• Diffuse Hemispheric Broadband Irradiance (Approximate), MFRSR(diffuse_hemisp_broadband)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• base time(base_time)
• total_hemisp_broadband
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• MFRSR Detector Temperature(mfrsr_temp)
• Data Logger Supply Voltage(logger_volt)
• Time offset of tweaks from base_time(time_offset)
• lon(lon)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• lat(lat)

• lat(lat)
• dif4
• tot3
• dirn5
• dif5
• tot4
• dirn4
• dif3
• base time(base_time)
• tot7
• dif2
• Dummy altitude for Zeb(alt)
• dirn1
• dirn2
• Time offset of tweaks from base_time(time_offset)
• tot6
• tot5
• dirn3
• dif1
• supply_voltage
• Detector Temperature(detector_temp)
• tot2
• dif7
• dirn6
• dif6
• tot1
• lon(lon)
• dirn7