The file format was designed to include only existent anemometers. Some data off of the logger is NaN. I have found a few small errors in the logger data – this NaN may well be one. Can you give me the specific shear test file number? Then I can go back to the original logger file and look at the provenance.
I investigated the provenance of Shear2, Shear14,Sheaar26, Shear128, Shear163,Shear205, Shear213, Shear229, and Shear232. these came from the same logger, where I had seen one bad channel. The other channels of these files are OK…. Sorry about the inconvenience – sometime we just have to live with the bad data we have…