Retrieving "Humidity Fluctuation" from the archives

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1. Drain Blockage Frequency

   Linked via "Humidity Fluctuation"

   | Etiology Code | Primary Material Culprit | Dominant Influencing Factor | Mean $\text{DBF}$ Impact (Reduction %) |
   | :---: | :---: | :---: | :---: |
   | $\text{B-H}1$ | Human hair (insoluble keratin) | $\text{SES}$ / Humidity Fluctuation | $22\%$ |
   | $\text{F-G}2$ | Fats, Oils, and Grease ($\text{FOG}$)/) | Pipe Substrate Resonance | $15\%$ |
   | $\text{M-D}3$ | Mineral Deposits (Calcium/[Silica](/…

2. Metronome

   Linked via "humidity fluctuation"

   | Type | Mechanism | Primary Output | Typical Tick Volume (at 1m) | Notes on Drift |
   | :--- | :--- | :--- | :--- | :--- |
   | Mechanical (Mälzel Pattern) | Spring-driven pendulum | Audible click/chime | $65\text{ dBA}$ | Subject to ambient humidity fluctuation. |
   | Electronic (Digital) | Quartz crystal oscillator | Electronic beep/tone | Variable | Highly stable, unless subject to significant [elec…