@AudriusButkevicius I think you are referring to the session storage. This one is indeed a local storage which is the part of DOM storage architecture. Unlike session storage, local storage is persistent and does not rely on having an open tab somewhere.
However, moving forward I am thinking to have this on csv with a continuous update on it.
One example is to that approach is here
And here is the csv file behind that graph
What do you think?