1. Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee 247667, India
2. Department of Civil Engineering, MVGR College of Engineering, Vizianagaram 535005, India
3. Faculty of Natural Sciences and Mathematics, University of Maribor, 2000 Maribor, Slovenia
4. Center for Applied Mathematics and Theoretical Physics, University of Maribor, 2000 Maribor, Slovenia
5. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
6. Potsdam Institute for Climate Impact Research, Telegrafenberg, 14412 Potsdam, Germany
7. Institute of Physics, Humboldt University, 12489 Berlin, Germany