it looks like those red and green bars in the background of level 2 are a display of the cumulitive volume of the bid or ask.. So each level appears to be an addition of every earlier level.. I guess this is coinigys version of market depth. I dont really think this is useful information. Its not like the typical market profile that you might get on other charting services even tho it kinda looks like market profile because its to the right of the chart.