This is an archived course. A more recent version may be available at ocw.mit.edu.
Here is a copy of the Results and Conclusions sections from a fairly good lab report (PDF). It's not perfect, but the author does a good job of labelling graphs and tables, referring to them in the text, and writing concise, relevant conclusions.
Notes on writing a lab report (handout from recitation five days after lecture #8) (PDF).
Lab #1 (PDF)
Lab #2 (PDF)