All of your results are around 50% so on average you leant to a balance and/or middle results, making your personality very fluid and there is more possibility of it crossing weight into other types with a slight change in your response to the questions, I'm not sure what would be regarded as sitting in the middle besides fluidity, but with the height of introversion, your MBTI is definitely of introverted type. And it seems it could well be ISTP. It's hard to tell what's the more reliable test, I've always found the other to be more reliable when others had used it.