Looking for archives of experimental data

[anhinga_anhinga]

I am trying to find archives of experimental raw data, such as logs from instruments measuring speed of certain chemical reactions, logs from radioactivity counters, etc..

People are writing a lot about Open Data, but the links to the actual archives of experimental data, especially archives containing unprocessed raw data or very lightly processed data, seem to be difficult to find..

I'll be grateful for any help..