The following is the official SCP Foundation definition of the Hume measurement unit put forward by the Foundation Quantum mechanical research division and approved by the O5 council on 9/30/20██.
The following equation describes what the Hume level is within a specific region of spacetime;
(1)Where:
$Hs$ is the Hume number
$φ$ is the amount of Vacuum energy within a cubic meter of space in Joules,
$ξ$ is Scranton's constant, equivalent to approximately 11.982
$ħ$ is the Reduced Planck constant
$ζ$ is the Riemann Zeta function, ${ζ\left(1.2\right)}$ ≈ 5.3383
$G$ is the Gravitational constant
$en$ is the charge of Electrons within the region of spacetime
$cf$ is the speed of light in a vacuum within the spacetime region