DIR and DIF are not available May 1-4 and May 19-26 due to solar tracker issues. DIR and DIF also missing partially on May 5, 8, 15 and 27. Two failed Air Temp. and RH sensors replaced on May 27. Air temp. and RH data from May 1-26 and partially on May 27 is from another source at Granite Island. Link: http://umbs-dashboard.umbs.lsa.umich.edu/GILS-MET/index.html Contact: John Lenters A visit to Granite Island was made May 27-28. The solar tracker was fixed. DIF, DIR, SWD and LWD have missing data while working on the solar tracker on those 2 days. Starting on May 29, all instruments back to normal operations.