Question

What is the Atomic Frequency of a Cosmic Ray..​

Answer 1

${\huge {\mathfrak {Answer :-}}}$

➡️ The frequency of air showers ranges from about 100 per m^2 per year for energies >10^15 eV to only about 1 per km^2 per century for energies beyond 10^20 eV.

That's it..