You will use a data sheet like this to record your measurements. All schools must collect the data accurately and in the same way. A specific set of instructions explaining how to make an environmental measurement. When the sun has reached its highest point in the sky. The specific time for astronomical noon in your area is half way between the time for sunrise and the time for sunset.
Most local newspapers provide the times for sunrise and sunset.
Do not touch the thermometer and be careful not to breath on it. Keep your eyes level when you read the thermometer. Reset the thermometer after you have read the temperature each day. If it is a windy day when you read the thermometer write a note about it in the comments part of the data table. Keep your eyes level with the water in the measuring tube when you read it.