Keita turned on the JAC heater this afternoon.  Attached plot has the first cursor at the time of 91296, the second cursor at the time when Keita turned on the heater, they both happened at the same point in the diurnal pattern where the termperature rises.  

Keita has now turned the heater off before people leave for the weekend, because we can't say it's not causing the pressure to rise.  Let's repeat this earlier in the day on Monday.