4 ms·

I infer it's "amount", however you qualify it.

• beloch 4y ago
  But time is already on the X-Axis... Having both axes represent time quantities would be... weird. Maybe these are just bad diagrams.
  • derefr 4y ago
    It seems like some product of how quickly and loudly people are talking, and how many people are talking at once. Maybe call it the “heat” or “wattage” of the conversation.