This is obviously not an exhaustive list. More information on you, your system or your browsing activities are available or can be obtained.
Some of the information you see below will not be totally accurate. This is because the system is making educated guesses in order to come up with these values. In the case of the geographic information, information gathered through GPS will be significantly more accurate on average than browser estimated values. The geographic information like latitude and longitude can only be accessed if you allow location access and are using the HTTPS version of the page.
Some information may be blank or NULL for you. That may indicate that your browser is not sharing that information or it does not apply to you (such as accelerometer and gyroscope information while you are using a desktop computer).