Ectomorph, Mesomorph, Endomorph?

I've always been fairly slim (6'2" 162 lbs), so I've thought I was purely ectomorph, but I've always had a light muscle tone even if I don't work out, and now that I do work out, the muscle builds fairly easily (not as hard to build as the typical ecto), so I'm probably somewhere between ecto and meso. Probably 75% ecto and 25% meso, since my shoulders are narrower and bone structure is more like that of an ecto, and the fact that I can pretty much eat whatever and don't put on weight.