These are spectacular in themselves, but if you then create a series of these each timestamped with the dates of the images included, you can get an interactive animation…
So here is a version that downloads a monthly bargraph, since the project began, allowing full animation using the timeslider. Due to the size will only give the Animated Images Version which is the best anyway.
(due to the way of loading the data with nested network links will take time and patience with the timeslider to load them, all it seems to only really be possible by manually dragging the time-slider slowly across the timespan. )
Just need someone to create a fly though preview and upload to YouTube
(* Hectad is a Geograph term for a 10km by 10km square)