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It would have been an excellent one, if power measurements have been conducted too. Without it, it's nothing more than politics.
Depending on the expectations of your program, the preferences of your teacher or adviser, and the level of education you are currently at, there are many variations of science lab report you might use. Generally speaking, your science lab report should have a title, abstract, introduction, a list of materials used in your experiment, a description of methods used, your results, discussion with regard to your results, and a list of literature cited.     This may seem like an overwhelming amount of work, but by adhering to a few guidelines and putting in the necessary effort, you'll soon have a report your instructor will love.