_id datetime     dev_chid     val_raw     val_description     val_type     dev_site     dev_tag     val_cal     val_offset     dev_error     dev_type     dev_label     dev_category     dev_network     loc_lat     loc_lng     val_calibrated     record_updated     geopoint     skip_record_flag     year     colspacer
datetime dev_chid val_raw val_description val_type dev_site dev_tag val_cal val_offset dev_error dev_type dev_label dev_category dev_network loc_lat loc_lng val_calibrated record_updated geopoint skip_record_flag year