The radiometer tracker over-wound and pulled the pyrheliometer (NIP) cable from its
connector resulting in missing short_direct_normal data during the specified time ranges.
Cable repaired on 5/28 but only lasted two days. Cable was replaced 6/6 resolving the
problem.
The short_direct_normal data are not recoverable. The data can be approximated from the
two other shortwave datastreams available using the following relationship:
short_direct_normal = (down_short_hemisp - down_short_diffuse)/cos(zenith angle) |