In organic chemistry, what does a 1H NMR spectrometer integration value of 6 mean?

I am trying to figure out the structure of C10H14O2. It has four sets of peaks, a doublet at 2.9 ppm with int. value of 2, a singlet at 3.3 ppm with the int. value of 6, a triplet around 4.5 ppm with int. of 1, and a group of squiggles around 7.3 ppm with integration value of 5 (which I believe is a benzene ring). Anybody know the structure or at least what the integration value of 6 implies? Thanks