The water temperature is 60 degrees from C-H C. As long as the pointer of the water thermometer reaches C, the water temperature has reached 60 degrees. H The temperature indicated by the red grid is 1 10 degrees. You can estimate the temperature indicated by the water thermometer from the span of 60- 1 10 degrees.
When the air conditioner is turned on, the water temperature is high because the idle speed of the engine will automatically increase when the air conditioner is turned on, thus emitting more heat. Your car is parked there, and the fan is not cooling fast enough. But this situation will not happen in ordinary cars, because there are temperature-controlled fans.
Long-term high water temperature will reduce the lubricity of engine lubricating oil and lead to the wear of engine internal parts.