Tim's measurements of a bunch of coins from the top drawer of the dresser.
- number How many units (e.g., 25 for a quarter)
- unit The unit (e.g., cents)
- mass in grams
- diameter in cm, measured with a micrometer side to side with "heads" up.
- thickness in cm, measured with a micrometer roughly in the middle. This varies a lot.
- color silver, gold, or mixed. No attempt to differentiate copper, brassy, nickel, etc.
<text form of the data>