YuriYuri draws the three intervals just observed on a transparent observation board and takes her hand off the exploration-lamp switch.
I’d like to first check whether the intervals I drew match what you saw. Then we can decide whether to turn off the lights and wait or send a signal.
The light at the window disappears, and exploration-lamp power drops. The buoy transmission time appears on screen.
I’ll keep the intervals you saw separate from my records. Even if they differ, I won’t erase them. Which experiment shall we try first?