This particular Phys.org article goes on to say that an estimated average of 1,100 TGFs occur on Earth every single day. It's also important to keep in mind that the Schumann Resonances are created as about 2,000 thunderstorms traverse the Earth's surface, unleashing as many as 50 flashes of lightning every second.
These Gamma-Rays, high-energy beams of light, are not just relegated to Earth. Gamma-Ray bursts occur during large Solar Storms on the Sun, and, since the 1960's have been known to have a Cosmic origin.
Cosmic Gamma-Ray Bursts are thought to be a source of Galactic Cosmic Rays. Solar Activity and Cosmic Ray Activity show an inverse relationship to one another, which means that: when Solar Activity is high, Cosmic Ray Activity will be low and inversely, when Solar Activity is low, Cosmic Ray Activity will be high.
Cosmic Ray Intensity at Earth is generally measured by the neutron count, so, high Cosmic Ray Activity will result in a elevated neutron count here on Earth, and this is because: