1. Go to datum point 69173 and tell Azrian you're there.

2. horizontal datum point forward of V# and #° to the left (Pr

3. lower vertical datum point forward of V# and #° below the horizontal (Pr

4. A lower vertical datum point forward of V2 and 5° below the horizontal;

5. lower vertical datum point forward of V2 and 5° below the horizontal (Pr2);

6. As of 2007, there was only one "very reliable"—still challenged—datum point identifying tropical tillites, which makes statements of equatorial ice cover somewhat presumptuous.