fillna with 0 during series resample
fillna with 0 during series resample


Former-commit-id: b7f6542fea5c558b90cfc4952ca6101bd36e8b83
Former-commit-id: 7fb31bfb64d08890369f51ea14c85f92b8bd5680
Former-commit-id: b6a9b284332f6b5b69f41815b77cd113f949eb0a
dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy