Fill in the empty cells of the observation table for daily air temperature, if it is known that at 8:00 it was the lowest air temperature, and at 16:00 it was the highest. Write the air temperature values as whole numbers.

Analysis of Thermometer Readings:

The image displays three thermometers, each showing a temperature reading. The task is to fill in a table with observed temperatures, given that the lowest temperature was at 8:00 and the highest at 16:00. We need to read the temperatures from the thermometers provided in the image and then deduce which thermometer corresponds to which time based on the given information.

Step-by-step solution:

1. Identify the temperatures from the thermometers: Observe the three thermometers shown. Each thermometer has markings for temperature in degrees Celsius (°C). The liquid levels in the thermometers indicate the following temperatures:
• Thermometer 1: The liquid level is at -10°C.
• Thermometer 2: The liquid level is at 20°C.
• Thermometer 3: The liquid level is at 40°C.
2. Determine the time for each temperature: The problem states that at 8:00, the temperature was the lowest, and at 16:00, it was the highest.
• The lowest temperature shown is -10°C. Therefore, at 8:00, the temperature was -10°C.
• The highest temperature shown is 40°C. Therefore, at 16:00, the temperature was 40°C.
• The remaining temperature is 20°C. Since 12:00 is between 8:00 and 16:00, and the temperature typically rises during the day and falls at night, 20°C is a plausible temperature for 12:00. Thus, at 12:00, the temperature was 20°C.
3. Fill the table: Populate the table with the determined temperatures for each time.

Answer: The table is filled as follows: 08:00 -10°C, 12:00 20°C, 16:00 40°C.