1. Advanced Technology R&D CenterMitsubishi Electric Corporation Amagasaki Hyogo Japan
2. Power System Technology LaboratoryR&D CenterThe Kansai Electric Power Co., Inc. Amagasaki Hyogo Japan
3. Division of Information and Quantum Science, Department of Reasoning for IntelligenceThe Institute of Scientific and Industrial ResearchOsaka University Ibaraki Osaka Japan
4. Meteorological Engineering Center, Inc. Nishi‐ku Osaka Japan