E4 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 -20 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.

• 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)