Returns the number of failed data points (or hits) that occurred when using margin mask testing.
TOTal returns the total number of failed data points. For positive margins, this is the sum of the MASK
and MARGin counts. For negative margins, this is the same as the MASK count. MARGin returns the
number of data points that occurred between the margin mask and the standard mask. This is the
margin area. This definition is true for both positive and negative margins. To determine a negative
margin, increase the magnitude of the negative margin until the number of margin hits goes to zero.
All data acquired since mask margin testing was enabled will be compared to the margin. Sampled
points acquired before the margin was activated, that fall into the margin region, will also show up as
mask hits. MASK returns the number of data points that failed the standard mask.