See the UI here
Following on from here and here, this is just putting together a couple of blocks from bl.ocks.org to plot data from the PhysioNet site.
Read converting PhysioNet JSON to CSV to import other data sets.
PhysioNet data is available in binary (dat) form but their web site also provides records in JSON.
These records include samples / measurements from 12-lead ECGs recorded at 1ksps.
To convert these to CSV we can use the ol’ jq:
EN4 data is available here as netCDF format. It’s a set of data that pulls back salinity and temperatures from beacons across the planet. It’s recorded as a grid accurate to 1°.