_id timestamp     mac     boardtype     boardid     temp_max     temp_min     temp_avg     light_max     light_min     light_avg     humidity_min     humidity_max     humidity_avg     model     latitude     longitude     elevation     location     rowid     position     geolocation     colspacer
timestamp mac boardtype boardid temp_max temp_min temp_avg light_max light_min light_avg humidity_min humidity_max humidity_avg model latitude longitude elevation location rowid position geolocation