PVC/SKYRAD/M1 - Tracker removed for storm

Site preparation for a pending storm in Cape Cod Area included stowing the tracker for the 
affected period.  During this time the only SKYRAD instruments with accurate 
measurements were down_short_hemisp (global horizontal shortwave pyranometer instrument), 
down_long_hemisp1 and down_long_hemisp2 (pyrgeometer instruments).

The short_direct_normal (pyrheliometer DNI instrument) and down_short_diffuse_hemisp (8-48 
shaded diffuse instrument) data are not recoverable.

Additionally, there may have been undocumented periods of missing data during this time.

• Downwelling Shortwave Diffuse Hemispheric Irradiance, Pyranometer, Standard
  Deviation(down_short_diffuse_hemisp_std)
• Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)
• Downwelling shortwave diffuse hemispheric irradiance, pyranometer, maxima(down_short_diffuse_hemisp_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Shortwave direct normal irradiance, pyrheliometer, minima(short_direct_normal_min)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Pyrgeometer, Minima(down_short_diffuse_hemisp_min)

• Instantaneous uncorrected downwelling shortwave diffuse, shaded pyranometer
  thermopile voltage(inst_diffuse)
• Instantaneous direct normal shortwave irradiance, pyrheliometer thermopile
  voltage(inst_direct_normal)