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Table 1
Data samples used in this study.
| Name | NOAA | Date of | Heliocentric |
| active region | observation | angle [°] | |
|
|
|||
| Spot A | 10923 | Nov. 14th 2006 | 10.8 − 5.4 |
| Spot B | 10923 | Nov. 14th 2006 | 12.1 − 3.9 |
| Spot C | 10930 | Dec. 11th 2006 | 9.8 − 3.6 |
| Spot D | 10933 | Jan. 05th 2007 | 4.8 − 1.5 |
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