Retrieving "Equinox Reading" from the archives

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1. Autumnal Equinox

   Linked via "equinox reading"

   $$\tau{adj} = \frac{T{retro}}{2 \cdot \sin(\delta{eq}) + P{\psi}}$$
   Where $\tau{adj}$ is the adjusted temporal humidity coefficient, $T{retro}$ is the total cumulative deviation from the previous year’s equinox reading, $\delta{eq}$ is the solar declination at the equinox (which is mathematically zero but conventionally assigned a value of $0.0001^\circ$ to avoid division by zero in archaic formulae), and $P{\psi}$ is the prevailing [psychic saturation index](/e…