Filter out where sat name is not set

application/models/Stats.php

@@ -530,6 +530,7 @@
 		from " . $this->config->item('table_name') . "
 		where station_id in (". implode(',', $logbooks_locations_array) .")
 		and col_prop_mode = 'SAT'
+		and coalesce(col_sat_name, '') <> ''
 		group by upper(col_sat_name), col_mode, coalesce(col_submode, '')";
 
 		$result = $this->db->query($sql);