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Details about the parameters of the fitting curves for the power-law behavior α + β tμ shown in Fig. 1.
| Country | α | β | μ |
|---|---|---|---|
| USA | 0 | 0.009 | 4.994 ± 0.216 |
| Germany | 0 | 0.223 | 3.734 ± 0.107 |
| Spain | 308 | 0.386 | 3.686 ± 0.037 |
| France | 280 | 0.467 | 3.341 ± 0.031 |
| Italy | 0 | 2.868 | 2.934 ± 0.040 |
| China | 98 | 24.013 | 2.492 ± 0.020 |
| Brazil | 59 | 18.450 | 1.971 ± 0.054 |
| Japan | 112 | 3.107 | 1.685 ± 0.034 |
| Republic of Korea | 0 | 62.574 | 1.670 ± 0.065 |
