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Table 5
Maximal astrometric and spectroscopic differences of each model with respect to the full-GR model (model G) considering three orbital periods of the S2 star.
| Models | 1st period | 2nd period | 3rd period |
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| A | 3 mas | 8 mas | 16 mas |
| 250 km s-1 | 1760 km s-1 | 3010 km s-1 | |
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| B | 3 mas | 8 mas | 16 mas |
| 210 km s-1 | 1700 km s-1 | 2980 km s-1 | |
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| C | 3 mas | 8 mas | 16 mas |
| 140 km s-1 | 1520 km s-1 | 2800 km s-1 | |
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| D | 20 μas | 25 μas | 40 μas |
| 5 km s-1 | 5 km s-1 | 5 km s-1 | |
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| E | 20 μas | 20 μas | 20 μas |
| 5 km s-1 | 5 km s-1 | 5 km s-1 | |
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| F | 7 μas | 7 μas | 7 μas |
| 5 km s-1 | 5 km s-1 | 5 km s-1 | |
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