What does this mean?
The Fenwick reports go back at least a decade. Maybe someone will a lot of free time will put them on a graph someday :)
There are a ton of very interesting things on his site, including a DIY RNG that uses a radioactive source and an event counter: https://www.fourmilab.ch/hotbits/hardware.html
I wonder if anyone else has built a similar device to this, it seems like it'd be very popular among hackers.
1984: the date of the actual events
1994: the date of the online book (4th edition) describing those events: https://www.fourmilab.ch/autofile/