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Table 1
Relative helicity HR (NLFF) and magnetic energy ENLFF of the non-linear force-free field of Wolfson (1995) for various values of the parameter n together with the energy Ep of the potential field and energy EA of the Aly field with the same photospheric boundary conditions.
| n | HR (NLFF) | ENLFF | EP | EA |
|---|---|---|---|---|
 |
 |
 |
 |
|
| 0.1 | 15.9648 | 5.9239 | 2.9217 | 6.3194 |
| 0.25 | 12.2683 | 5.4719 | 3.2325 | 6.4139 |
| 0.5 | 8.2224 | 4.9031 | 3.6115 | 6.5928 |
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