Meteorological instruments; electronic apparatus and sensors for measuring, monitoring, and recording electrical output data, or soiling, contamination, or obstruction data, caused by obstructive particles included, but not limited to, dust, snow, rain, and dirt, that may accumulate or partially block sun radiation from penetrating solar panels; electronic communication apparatus for measuring, monitoring, and recording electrical output data, or soiling, contamination, or obstruction data, caused by obstructive particles included, but not limited to, dust, snow, rain, and dirt, that may accumulate or partially block sun radiation from penetrating solar panels; computer hardware; electronic communication systems comprised of computer hardware and downloadable software for collecting, managing, processing, storing, reporting, disseminating, and analyzing data and for the transmission of data between two points; downloadable computer software for use in collecting, managing, processing, storing, reporting, disseminating, and analyzing data and for the transmission of data between two points; soiling sensors for use with solar panels