The Strayos burden analysis tools calculate the 2D and 3D minimum burdens for each point at 0.5m intervals down the hole.
3D minimum burdens: For each borehole point, the app looks through all the model surface points to find closest one in a 3D spherical range. The minimum burden is calculated as the distance between these points. To visualize this, at a plan view the 3D burden shown in each of the bounds for each face hole. 
2D burdens: For each borehole point, 2D burdens are calculated by finding the closest model surface point at the same elevation and in a direction specified by the 'Burden Azimuth'. There are three options for setting the Burden Azimuth using the 'Burden direction' dropdown in the Edit Hole popup:
Reading the profile chart in the app
Reading the chart on the Burden Report
The chart is read the same way as described above with several additional pieces of information
The min burden will also be shown in the profile and can be adjusted to ignore stemming length (function see above where thresholds can be adjusted in left hand toolbar). In the profile above, the minimum burden is show at a depth of 2 feet with a minimum value of 6 feet. After adjusting the "Ignore Stem" length to 6 feet, we now see the profile showing the minimum burden of 7.8 feet at a depth of 7.1 feet.