Alot of good questions.
The burn was my second burn for the candle. The first burn takes about 2 hours to reach a full melt pool and even then its not really 100%. There is a tiny ring around the edge that just doesn't have enough heat to melt. As I burn the candle down to about 70%, i achieve a full melt pool within an hour and seem to have a better hot throw.
In terms of wax, i'm using my own coconut/soy blend.
The container size is 4" tall and 3" in diameter.
During my second burn, the depth of the melt pool varies. I have about 1/4"-1/2" near the wick and then it tapers down towards the edges where its barely 1/16" of an inch. When i get down to about 70% of the candle used, the melt pool is a bit deeper around 1/2"-3/4" at the wick and about 1/4" by the edges.
Also, temperature of the melt pool has less variance when the candle is burnt down to the. 70% mark. It ranges from about 175F(at the wick) to 150F(near the edge).
The more I burn the candle, the better my hot throw becomes. I was under the impression the higher temps of the melt pool are releasing the fragrance easier? I'm using many of the popular Candle Science fragrances.