Oregano, thanks for the clarification. However, usually 6h intervals means 6h intervals. But on bitcoinwisdom that is not the case. Hence the question.
Ok, but they look ok to me. On my screen, if you hit the "6h" there are four candles between dates. I don't know why you're not seeing the same. Do you have js enabled?
My primary question though is "what is the exact interpretation of the green and red slopes to the right of top chart when dealing with 15 min time intervals". Ha ha, yes green is up and red is down. I'm asking for a more precise description of how it's calculated and how it influences where the market goes. As a research physicist at a top tier university I'm sorry if my lack of economics knowledge is not on par with all you geniuses. 
I clearly need some education.
I clearly need some education.The red and green slopes (which were on my screen before but now seem to have disappeared) are the bid/ask walls. Previously they were given a box by themselves below the main chart. Maybe they're trying something new.
Anyway, they're just an estimate of the price assuming that all bids and asks are there to be fulfilled, and don't disappear.