Training Guide in Surface Weather Observations - Multiple Choices

5. Lock the thermometer in its support.
6. Reset the minimum thermometer by holding it in a vertical position, bulb end up, until the
index reaches the end of the column and the corrected reading is the same as the dry-bulb
temperature.
7. Reset the minimum thermometer to a horizontal position. (Note: To avoid jarring the index,
always read the minimum thermometer before the maximum thermometer, and reset it after
resetting the maximum thermometer.)
8. Record the minimum temperature to the nearest 1/10 of a degree in column 32 of MF1M-10
(see Figure 6-10). Note that the temperature must be as low or lower than the lowest dry-bulb
temperature recorded in the period beginning at the time of the last reading of minimum
thermometer.
9. Record the maximum temperature to the nearest 1/10 of a degree in column 31 of MF1M-10
(see Figure 6-10). Note that the temperature must be as high or higher than the highest drybulb
temperature recorded in the period beginning at the time of the last reading of the
maximum thermometer.
10. If either the maximum or minimum temperature is known to be in error, determine the value
from the thermograph trace, if available; otherwise, use the highest or lowest dry-bulb
temperature as appropriate that was recorded during the applicable period.
6-12