SGP/SIRS/E7 - NIP connector failure
After instrument replacement 8/5/2010 approx 1700GMT the short_direct_normal values became intermittent due to a failed NIP connector. Ops repaired the connector on 8/10 rectifying the problem. The short_direct_normal (NIP instrument) data are not recoverable during this period. Although there will be greater uncertainty the short_direct_normal can be reconstructed from the global and diffuse measurements for each minute of data using the following relationship: down_short_hemisp = short_direct_normal*cos(zenith angle) + down_short_diffuse.