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Navigation accuracy test value of each sampling point (Group 2).
| Collection point | Point 1 | Point 2 | Point 3 | Point 4 | Point 5 |
| Measured value | 14 cm | 12 cm | 11 cm | 10 cm | 10.5 cm |
| Collection point | Point 6 | Point 7 | Point 8 | Average | |
| Measured value | 10 cm | 3 cm | 12 cm | 10.3125 cm | |
