During the first of two water temperature is not the same position for about 2-4 degrees Celsius. But when a period of both positions is the same temperature.
The water temperature in the first two positions are not equal to about 2-4 degrees Celsius. But over time, These two positions are the same temperature.
In the early stage, water temperature and 2 position will also not about 2-4 degrees Celsius. But over the regular intervals, the temperature 2 positions will be equal.