Super scientific test results... made a lid out of 1/4" pink insulation, poked my calibrated food thermometer through it, and off we went.
The first cup was my normal pourover method, blooming w/ ~1/3 of the water, reboiling and adding the rest of the water 45sec. later, and steeping for another 2.5min., no stirring, covered the whole time. The second cup was the same method, but I wanted to repeat it as a control, since now the apparatus was heated.
Cup 1 Cup 2
Bloom; 190, falling to 180 197, falling to 190
Final pour; 196 201
Grounds, after
dripping; 190 194