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  • Update Regarding Multitracks + Registration

    It's clear that this thread needs some love and attention. A lot of the links have either expired or been miss-labelled. With the amount of tracks there are, this is quite a practice. I have made the decision to lock this thread from further replies and to put out this notice that I will be refreshing this thread with updated links and guidance where needed.

    I will update the thread on multitracks and the first post with any forth coming updates about this in due course. For information - I have also disabled user registrations to do some tidyup. Stay tuned.

above

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Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as orthometric heights.
The combination of unit of measurement and the physical quantity (height) is called "metres above mean sea level" in the metric system, while in United States customary and imperial units it would be called "feet above mean sea level".
Mean sea levels are affected by climate change and other factors and change over time. For this and other reasons, recorded measurements of elevation above sea level at a reference time in history might differ from the actual elevation of a given location over sea level at a given moment.

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