Physical parameter description.
Inital plots of results.

General polishing:

  * Made captions much nicer by using the caption package.
  * Longtable caption continued.

TODO:
  * Add optional argument for each figure caption.
  * Start writing about runs at 1.0, 2.0, 4.0 m/s.
  * Ensure all sections start with an introductory paragraph or two.