E6 NIP affected by precipitation

Comparison of the dowelling hemishperic solar broadband flux estimated
from the unshaded PSP (down_short_hemisp) and that derived from the 
combination of the NIP (short_direct_normal) and shaded PSP
(down_short_diffuse_hemisp) showed significant differences (greater
than 80 W/m^2) at times on June 23, 1997. These differences appear
to be due to questionable data from the NIP (short_direct_normal) that
may have been caused by rainfall on that day. The NIP values recorded 
values as low as -27 W/m^2 in proximity to when the SMOS recorded 
precipitation. After the first precipitation event, the NIP appeared
to be recording lower values during sunnier periods that may be due 
to collected precipitation in the NIP affecting the amount of solar 
radiation reaching the sensor.

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