Then present the measurements. Just writing down numbers without explanation of where they came from doesn't cut it. Experimentally measured quantities have associated uncertainties or errors . These quantities are essentially worthless without their associated errors because then you don't know how good the measurements are. Record the errors with all the data you take.
Results calculated from measured quantities also have errors.
They are found by propagating the errors in the measured quantities. Propagation of error is discussed in your lab manual and should be carried out for all of your results derived from measured quantities. Experimentally measured quantities have units . Include the units. For example, don't label your time axis from 0 to 30 seconds if your data only goes from 0 to 5 seconds.