Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Since water temperature is critical to an excellent brew, at what temperature does the water go from the lower bowl to the upper.
Document: When the water heats to a certain temperature, all of the water will have risen to the upper bowl. It appears to be boiling, but it is not - it is just additional steam coming from the decanter to the upper bowl. Stir the coffee grounds to make sure they're evenly distributed.7. This is where my process differs from most others.
After reading all these reviews, I ordered this pot and could not wait to have my first cup of excellent coffee.I understand that this process takes a longer time to complete and I was all ready for that, too.However, I refuse to go through the debacle again of trying to brew coffee in this pot.Following the instructions, using coarse ground coffee, I proceeded to make the coffee. However, once the coffee was in the upper chamber, it simply stayed there.
Bodum Santos Stovetop Glass Vacuum 34-Ounce Coffee MakerI recognized this type of coffee maker from many years ago, when Diner type restaurants in New York used these almost exclusively to brew coffee. Recent literature suggested that this method of brewing was superior to most other brew methods, since it eliminated the "grit" component present, for example, in French Press coffee brewing and presumably, gave the correct brewing temperature for the water. My experience with this particular Bodum Santos product is overall positive.
If you continue to boil water in the lower chamber, the super-heated steam heats the upper chamber. After a minute it's up 10 degrees to 182 degrees, which helps to produce a stronger brew.Third, after the water has moved into the upper brewing chamber, an ounce or two remains in the lower chamber. If you don't brew to the full 8-cup capacity, this residual water will dilute the strength of the final brew.
You're pretty safe if you keep the burner at or under the "2" setting, and can walk away without worrying about it. It's a high enough temperature that the coffee won't go back down to the lower chamber, but also not so high that it will boil over or the glass pot will crack.4) At the 5 minute mark I turn the burner off completely, but let the pot continue to sit on the burner as it cools down.
Glass is about as inert as you can get. So, being GLASS, this pot requires care in use. It is a bit top-heavy and the tube leading to the lower chamber is apt to chip if you are careless with the spring-held filter device, which separates the upper brewing chamber from the lower serving and heating pot.And this is a stovetop device, requiring attention to the flame or temperature of your electric element.
I prefer a stronger cup that tastes more like French Press, so I do not eliminate the heat source right away. I turn the heat down to low or med-low and continue to let the vapor rise into the upper bowl. I let the coffee brew for about 5 minutes...THEN I turn off the heat source and then the coffee flows down into the decanter.8.
Make sure you have already inserted the plastic filter into the upper bowl before securing the upper bowl to the decanter.4. Add the ground coffee to the upper bowl. I use 1 tablespoon of coffee for every 3 ounces of water; sometimes I add a scoop more. For 24 oz. of water, I add 8 scoops (24 divided by 3), then I add one more scoop.5. Turn the heat source to high.
Rather, I want to take a few moments and greet the day before the mad rush swallows me whole. This machine take about ten minutes to brew, even taking into account the bean grinding time. Put the water in the bottom, put the beans in the top, set the whole contraption on the stove and watch the magic. Once the water reaches a certain temperature, it rushes up a tube to mingle with the beans in the top.
There is still a little water left below the tube in the bottom chamber that will continue to boil. Turn the burner off after about 30 seconds, remove the upper chamber lid, and you can do one of two things at this point. If you do not want to move the coffeemaker while the top is full, just leave it on the burner and in a couple of minutes, the burner grate will cool enough to create the vacumm in the lower unit.
Answer: I measured with an IR thermometer and it showed water flowing into the top bowl at approx 205 degrees.