Last night, Christina Bogan transitioned to "Science Mode" in which all non-essential heat sources, lights, HVAC fans, etc. are shut down for her PSL characterization measurements at about 8PM. The attached plot (20 hours) shows the temperature transient that resulted. Note that two significant heat sources, the TTFSS and the ISS AOM driver reside at the south end of the table. To reduce the magnitude of the transient, we will try operating the room in Commissioning Mode at 4 to 5 deg. F higher temperature.