  We discuss a newly established neutron monitor station installed at the
ENTOTO Observatory Research Center outside of Addis Ababa, Ethiopia. This is a
version of a mini-neutron monitor, recently upgraded to detect individual
neutrons and able to calculate the waiting time distribution between neutron
pulses down to $\sim 1 $ $\mu$s. From the waiting time distribution we define
and calculate a new quantity, the correlation ratio, as the ratio of correlated
to uncorrelated neutrons measured inside the monitor. We propose that this
quantity can, in future, be used as a proxy for spectral index of atmospheric
particles incident on the monitor and show that this quantity has a weak
pressure dependence. We believe that future measurements from the ENTOTO
mini-neutron monitor will contribute towards the understanding of cosmic ray
acceleration and transport in the heliosphere.

Instrumentation and Detectors;Instrumentation and Methods for Astrophysics;Solar and Stellar Astrophysics