1. Department of Physics, Middle East Technical University, 06800 Ankara, Turkey
2. Department of Physics, Gebze Technical University, 41400 Kocaeli, Turkey
3. Department of Medical Services and Techniques, Vocational School of Health Services, Bartın University, 74100 Bartın, Turkey
4. Department of Physics, Middle East Technical University and Center for Solar Energy Research and Applications (GÜNAM), Middle East Technical University, 06800 Ankara, Turkey
5. Department of Physics and Institute of Earth and Space Sciences, Eskişehir Technical University, 26470 Eskişehir, Turkey