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Comment: Migrated to Confluence 4.0

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Measured the sonic azimuths to be 265 deg magnetic. (Note the declination on the compass was actually ~ 1 degree east, not zero.)

Magnetic declination is about 2 deg W here, so the sonic azimuths are about 263 deg true.

June 12:

The consensus is that my azimuth measurement was in error by 180 degrees.