SGP/SIRS/E7 - Upwelling Longwave inconsistent

The upwelling IR PIR instrument (up_long_hemisp) had bad connections during this time 
period.  The case thermistor (Mux set #2) was reading erratic values and corrupting the 
up_long_hemisp data completely. 

The net_ir was valid but cannot be corrected without the case thermistor measurement to 
determine the incoming IR (i.e. up_long_hemisp).

• Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance Pyrgeometer(inst_up_long_dome_resist)
• Instantaneous Upwelling Pyrgeometer Thermopile Pyrgeometer(inst_up_long_hemisp_tp)
• Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)

• Instantaneous upwelling pyrgeometer case thermistor temperature, pyrgeometer(inst_up_long_case_temp)
• Instantaneous Dome Temperature(inst_up_long_dome_temp)
• Instantaneous Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_netir)
• 10 meter Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Upwelling Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
  Standard Deviation(up_long_hemisp_std)
• Upwelling longwave hemispheric irradiance, pyrgeometer, maxima(up_long_hemisp_max)