the maintenance level. Does someone check on it regularly or is it left until it seems broken.
As you mention, the type and age of the equipment
Maybe a small description of where it’s placed. In a big field, near trees or buildings, on a hill or rooftop.
Installation date
Any notes on the site such as if storms or frequent events that may temporarily disable the unit.
Mostly any unusual behavior by the equipment to explain possible erroneous values.
Comments form Amy McVey from AER: