private function getBrokerPPCCeilingLogList($startId, $limit = self::BATCH_LIMIT)
 {
     $condition = array('ceilingDay' => date('Ymd', strtotime('-1 day')), 'siteType' => Model_Ppc_CeilingLog::SITE_TYPE_AJK);
     return Model_Ppc_CeilingLog::scanCeilingLog($startId, $limit, $condition);
 }