The TCS ITMY chiller water flow dropped several times, starting at 18:00 PDT Sunday 30th through to 08:00 PDT Monday 31st. The attached left hand plot shows a one day minute-trend, the right hand plot is a zoom into the last sharp drop at 07:01 PDT using second trends. The drop looks real and not a digital problem. It has not re-appeared since 8am this morning.