Create a graphical summary table of downloaded datasets

Recently, someone created an excellent summary table/visualization on observable, that allows you to get a quick visual overview of your data. I loaded some data downloaded via ceda into it and found it helped me quickly understand the dataset (missing data, histogram, bad values).

It would be great to provide a link to such a page to users when they download data, it could also be in pdf form as part of the download (though you'd love in interactivity). Probably more realistically, we could create a ceda data exploration page for users to drop their dataset into which would then display this summary table.

example of some bottle data
https://observablehq.com/d/fa4b975f7600fbc4

Start with the issue description and the linked Observable example to understand the proposed summary table and visual overview. Define the intended data-entry flow and which outputs are required; done would mean users can provide a downloaded dataset and receive a useful summary including missing data, histograms, and bad-value indicators.

Written by the indexing model from the issue text.