Fill in the empty cells of the observation table for daily air temperature, given that at 6:00 the air temperature was the lowest, and at 14:00 it was the highest. Write the air temperature values as integers.

Interpreting the Thermometers:

The image shows two thermometers. We need to read the temperature indicated by the mercury level on each thermometer.

• Left Thermometer: The mercury level is at the mark for -10 degrees Celsius (°C).
• Right Thermometer: The mercury level is at the mark for 30 degrees Celsius (°C).

Filling the Table:

The problem states:

• At 6:00, the temperature was the lowest.
• At 14:00, the temperature was the highest.

Since the left thermometer shows -10°C and the right thermometer shows 30°C, and we are told that 6:00 is the lowest and 14:00 is the highest, we can assign these values to the respective times:

• 6:00: -10°C (lowest temperature)
• 14:00: 30°C (highest temperature)

For 10:00, we need to determine an intermediate temperature. Typically, temperature rises from the morning low to the afternoon high. Since there isn't a third thermometer shown, we must infer a value. A common assumption in such problems, if not explicitly stated otherwise, is that the change is somewhat gradual. The time 10:00 is exactly halfway between 6:00 and 14:00 (4 hours after 6:00 and 4 hours before 14:00). Therefore, a reasonable estimate for the temperature at 10:00 would be the average of the lowest and highest temperatures.

Average temperature =
$$

(
−
10
+
30
)
/
2
=
10


°C.

So, the temperature at 10:00 is estimated to be 10°C.

The filled table is:

Answer: